IB Business Management HLUnit 1.5 — Growth and EvolutionPaper 1 & 2Core skill~10 min read
Should a Business Grow at All?
Growth looks like the obvious goal. More shops, more staff, more revenue, more everything. Yet the overwhelming majority of firms in any economy are small, and plenty of them could grow and choose not to. Understanding why is one of the quickest routes to evaluation marks in this unit.
📘 What you need to know
Firms grow to gain market share, market power, lower average costs, diversification and easier access to finance.
Owner ambition is a genuine reason too — not every motive is financial.
Firms stay small for niche markets, personal service, flexibility, avoiding diseconomies, lack of finance, or simply because the owner wants a manageable life.
Satisficing means aiming for a satisfactory result rather than the maximum possible one.
Profit is an amount of money. Profitability is profit measured against revenue or investment, usually as a percentage.
Size is not a measure of success. The right question is whether the firm’s size lets it achieve its objectives.
Two roads out of a successful small firm
Picture a bakery that has been profitable for three years. The owner can open a second branch, or keep one shop and make it better. Both are legitimate strategies with different consequences, and an exam question is nearly always asking you to compare them.
Whenever a question asks “should this firm expand?”, the marks are in showing you understand what is given up by choosing either road.
Why firms want to get bigger
Reason
What the firm is really after
The catch
Lower average costs
Economies of scale make each unit cheaper to produce
Only works up to the efficient scale; after that costs climb
Market share
A larger slice of sales, which usually raises profit over time
Share bought by cutting prices can destroy the margin
Market power
Ability to set prices and dictate terms to suppliers
Attracts regulators and resentful suppliers
Diversification
Spreading risk across products or markets
Moving into unfamiliar industries where the firm has no expertise
Access to finance
Lenders and investors see large firms as safer bets
More outside money usually means less owner control
Ambition and status
The owner or board simply wants to run something bigger
Growth pursued for ego rather than returns often destroys value
That last row matters more than students expect. Managers are often rewarded for running a bigger operation, not a more profitable one. If a case study shows a chief executive pushing hard for expansion that the numbers do not support, you are being invited to question the motive.
Why plenty of firms stay small on purpose
Some firms are small because they cannot get the finance to grow. Others are small because growing would ruin the very thing customers pay them for.
Reason
How it works
Niche market
Demand is small but loyal, and a big firm could not serve it profitably
Personal service
Customers are buying the owner’s attention; scale would dilute it
Flexibility
Few staff and no layers means the firm can change direction in a week
Avoiding diseconomies
The owner has seen rivals grow, slow down and lose their edge
Limited finance
Banks will not lend enough, and the owner will not give away equity
Owner preference
Growth means longer hours and more risk; the owner wants neither
Low barriers online
The internet lets a tiny firm reach a global niche with small overheads
Satisficing is the word for the last of these. The owner is not failing to maximise profit; they are deliberately choosing a satisfactory profit alongside a life they enjoy. Use the term precisely and it reads as genuine understanding rather than revision-guide vocabulary.
Profit is not profitability
This trips up a surprising number of students, and it decides several exam questions outright.
Firm A earns over three times the profit. Firm B keeps three times as much of every pound it takes. Which one is performing better depends entirely on the question being asked.
🧩 How to answer “should this firm expand?”
Start from the firm’s objective, not from a general belief that growth is good.
Give one strong reason to grow that fits this firm, with the mechanism spelled out.
Give one strong reason not to, ideally drawn from the stimulus material.
Check the finance. Growth needs funding, and where it comes from changes the risk.
Use profitability, not just profit, if any figures are given.
Conclude with a condition: expand if the market is genuinely there, stay put if the appeal is the personal service.
WORKED EXAMPLE
Does expansion improve profitability?
A restaurant makes £90,000 profit on revenue of £600,000. It opens a second site. Group revenue rises to £1,100,000 and group profit to £121,000.
Margin before(90,000 ÷ 600,000) × 100 = 15%Margin after(121,000 ÷ 1,100,000) × 100 = 11%What happened
Profit rose by £31,000, so on the face of it expansion worked.
But each pound of sales now generates less profit than before.Profit improved, profitability worsened — the new site is diluting performanceworth accepting only if the second site is still building its customer base
EXAM-STYLE
Explain two reasons why a small firm may choose to remain small. [4]
Reason 1: the niche depends on being small
A tailor making made-to-measure suits sells personal attention. Doubling in size would mean less time per customer, which is the product itself.
Reason 2: avoiding diseconomies of scalemore staff → extra managers → slower decisions and higher average costThe owner can currently make a decision and act on it the same afternoon.Staying small can be a strategy, not a limitation
💡 Exam tip
Never assume growth is automatically good. Examiners are explicitly looking for balance here.
Use profitability whenever figures appear. Comparing raw profit between different-sized firms is meaningless.
Ask how the growth is financed. Loans add interest and risk; new shares dilute ownership.
Link back to the firm’s objectives, which you covered in Unit 1.3. Size is a means, not an aim.
Use “satisficing” correctly — it means accepting a satisfactory outcome, not failing to try.
The best conclusions are conditional: what would have to be true for expansion to make sense here?
⚠ Common mix-up
Small does not mean unsuccessful. Most firms in most economies are small and profitable.
Profit and profitability are different measures. A firm can raise one while lowering the other.
Market share is not the same as profit. Share bought with discounts can lose money.
Growth is not the same as diversification. A firm can double in size selling exactly one product.
Diseconomies are not guaranteed. Well-run large firms avoid them for a long time.
A small firm is not always short of finance. Some choose not to borrow.
Up next: Internal and External Routes to Growth — if a firm does decide to expand, it has to choose between building slowly on its own and buying its way there. Those two routes carry very different risks.
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