Organic, Partnership, or Acquisition: Growth Paths Compared

Three paths, one goal: why the path is a decision of its own

Most growth discussions revolve around direction: new customers, new regions, new services. The Ansoff matrix organizes these directions, as the article Applying the Ansoff matrix describes. The second question is asked less often: by which path does the business obtain the capabilities, customers, and capacity it needs for the chosen direction? It can build them itself, use them through a partner, or buy them along with another business.

The question this article sets out to answer: When is organic growth, when is a partnership, and when is an acquisition the better path for a small or midsize business? To answer it, we first clarify the terms, then introduce the Build, Borrow, Buy mental model, compare the three paths, review what research shows about organic and acquired growth, and finally derive four test questions.

An acquisition is a tool of strategy, not a strategy. Those who confuse the two buy first and look for the reason afterward.

Terms: organic, through partners, through acquisition

• Organic growth: The business grows under its own steam, with its own employees, its own sales, and its own money. New capabilities come from hiring, training, and experience.
• Growth through partners: The business uses another business’s capabilities or customer access without buying it. A sales partnership is an agreed cooperation between two independent businesses with the aim of jointly winning or serving customers. Licenses, supply contracts, and joint offers also belong here.
• Growth through acquisition: The business acquires another business or parts of it. An acquisition is the purchase of a company or part of one, such as the company as a whole or individual assets like machinery, customer contracts, or a brand.

The paths are not mutually exclusive. Many businesses grow organically at the core, work with partners on individual services, and occasionally acquire. What matters here is the decision for a specific project: which path fits this gap between what the business can do and what it needs for its goal?

The mental model: build, borrow, or buy

Laurence Capron and Will Mitchell proposed a model for this decision that they call Build, Borrow, Buy. Capron (2016) describes the starting point. In her account, acquisitions are a crude means of obtaining specific capabilities. They come with parts the buyer does not need, they are costly, and they disrupt ongoing operations. In her own research, she found that only 27 percent of the telecom executives surveyed had actually extracted the value of the acquired company’s capabilities.

Her most important finding concerns not execution but selection. According to Capron, many executives jump straight into the purchase without having reviewed the other paths. Acquisitions then become the strategy instead of a tool. She recommends reserving an acquisition for cases where neither internal development nor a contract nor a partnership is suitable. The model therefore checks, in a fixed order, whether a simpler path is enough.

The three paths compared directly

Each path has its own profile of speed, cost, control, and risk. The following table classifies them for a small business. It is an assessment, not a measurement.

The worked example shows why acquisition is so tempting: it buys time. That time is paid for with capital and with risk. How much money is tied up is described in the article Financing business growth. That organic growth also costs liquidity, because materials and wages fall due before payment comes in, is shown in the article Growth costs cash.

What research shows about organic and acquired growth

In 1959, the economist Edith Penrose described why companies cannot grow arbitrarily fast under their own steam. Every expansion ties up management attention: onboarding new employees, adapting routines, distributing responsibility. These adjustment costs limit the next round of growth. Research calls this the Penrose effect: firms that have grown quickly and organically tend to grow more slowly afterward.

Lockett, Wiklund, Davidsson, and Girma (2011) tested this prediction with 11,525 Swedish firms from 1987 to 1996. They confirmed the Penrose effect. At the same time, they found that acquisitive growth promoted later organic growth. Acquisitions seemed to offer a way out of the brake because they bring new capabilities and experienced managers.

Lucini-Paioni, Desyllas, Marsili, and Cefis (2026) repeated the study with data on Dutch firms from 2011 to 2019. The average firm in their sample had about 13 employees, compared with about 42 in the Swedish one. They found the Penrose effect again. On acquisitions, they reached a different result: acquisitions initially slowed organic growth, and more strongly for smaller and younger firms. Only acquisitions completed two to four years earlier boosted growth. The most effective were acquisitions moderately related to the firm’s own business, new enough to bring something new and close enough to be manageable.

The authors of the replication explain the difference with two things: small and young firms have less experience with acquisitions, and many of the firms in their sample grew organically and through acquisition at the same time, which puts a double load on management. Both studies measure growth by headcount, not by earnings. They tell you how a business grows, not whether the growth pays off.

Two views: acquisition as shortcut or detour

The first view sees acquisition as a shortcut. It brings customers, skilled staff, and capabilities in one move, and it bypasses the brake that organic growth puts on itself. In Germany, there is also a supply that rarely existed before: according to KfW’s succession monitoring, around 545,000 owners of Mittelstand businesses, Germany’s small and midsize firms, want to hand over their business by the end of 2029, and 569,000 plan to close it without a successor. For businesses willing to buy, that is an opportunity.

The second view sees a detour. An acquisition mainly costs what is already scarce during growth: management time. The Dutch data show that small buyers in particular initially grow more slowly. Capron also describes how buyers often buy for the wrong reasons, out of self-interest, out of habit, or because a particular target is attractive. The article Growth through acquisition frames this with Roll’s (1986) hubris hypothesis: those who are determined to buy overestimate the benefits and underestimate the risks.

I consider both views compatible if you look at the timeline. An acquisition is not a shortcut in the first year, at best in the third. Anyone planning one should therefore not also want to grow strongly organically at the same time. And they should first check whether a partner can close the gap faster and more cheaply. How to set up a partnership that lasts is shown in the guide Setting up sales partnerships.

Choosing the path in four questions

The model and the findings yield a procedure that can be completed in an hour before any larger growth project. The order matters because it leads from the cheapest to the most expensive path.

1. Name the gap

   Write down in one sentence what is missing: a capability, customer access, capacity, or a region. Without this sentence, no path can be evaluated.

2. Check your own proximity

   Is the gap close to what the business can already do? Then building it yourself is usually the best path, even if it is slower. Subtract the management capacity that is already tied up.

3. Check whether it can be bought

   Can the missing service be described precisely enough for a contract to govern it? Then a supply, license, or service contract is often enough.

4. Check how close the cooperation must be

   Does the service need to be tightly meshed with your own offering but not permanently housed in the business? Then a partnership with clear goals and a pilot phase is the next step.

5. Check integration

   Only when the previous paths do not fit is acquisition on the table. Then check whether time, money, and management capacity are sufficient for integration and how many customers and key staff will stay when the previous owner leaves.

Working with competitors is a special case of the partner path, for which competition law sets limits. When it makes sense and is permitted is described in the article Working with competitors.

Conclusion and what you can do this week

When is organic growth, when is a partnership, and when is an acquisition the better path? Growing organically fits when the new task is close to what exists, and it slows itself down because management time is scarce. A partnership fits when the gap is limited and describable and speed matters. An acquisition fits when a capability is needed quickly and permanently and the business can integrate it. Research shows that small buyers in particular must expect to grow more slowly at first and that acquisitions only pay off after a few years. The Build, Borrow, Buy model protects against the most common mistake: choosing the most expensive path without having checked the cheaper ones.

1. This week: Write down the gap for your most important growth project in one sentence.
2. Next week: Go through the four test questions in the order given and note a reasoned answer to each.
3. In a month: Set an exit condition and a review date after twelve months for the chosen path.

The right growth path is rarely the fastest. It is the one management can carry alongside the ongoing business.