IB Business Management SLTopic 1 — Growth and EvolutionPaper 1 & 2Core idea~9 min read
Should a Business Grow at All?
Growth looks like the obvious goal, and for many firms it is. But almost every business in the world is small, and a lot of them are small on purpose. The exam question is never “is big better?” — it is whether this particular firm is better off growing.
📘 What you need to know
Firms grow for market share, market power, lower costs, spread risk, easier finance — and sometimes just because the owner wants to.
Profit is an amount of money. Profitability is profit as a percentage of revenue. A firm can have huge profit and poor profitability.
Small firms survive by being personal, flexible and specialised, often in a niche market.
Some owners are satisficing — aiming for a good enough profit and a decent quality of life rather than the maximum.
Staying small means less finance, weaker recruitment and no economies of scale, so margins are usually thinner.
Technology cuts both ways: the internet gives small firms cheap access to customers they could never have reached before.
Why firms want to get bigger
Ambition. Owners and managers often simply want to run something large, and they push for it.
Market share and profitability. A bigger slice of the market usually means more revenue and better returns over time.
Market power. Size gives a firm more control over its suppliers and its prices — taken far enough, it edges towards monopoly.
Lower costs. Economies of scale reduce the cost of every unit made.
Spreading risk. Selling several products in several markets means one failure does not finish the business.
Access to finance. Lenders and investors see large firms as safer bets, so money is easier and cheaper to raise.
Profit is not profitability
This distinction is worth learning properly because it is the difference between a good answer and a confused one.
Learn this
Profitability (%) = (profit ÷ revenue) × 100
Both firms are doing fine. But if a question asks whether growth has been worthwhile, the percentage tells you more than the amount does.
Whenever a case study says “profits have doubled”, check the revenue. Profits doubling while revenue triples means the firm has got bigger and worse at converting sales into profit.
Why so many firms stay small
Almost every business in a developed economy employs fewer than fifty people. That is not a failure rate — it is a set of deliberate choices.
Personal service. Small firms know their customers by name and build relationships large chains cannot copy.
Niche markets. A specialised product sold in small numbers at high prices can be very profitable, and the overheads are low.
Flexibility. With no layers of management, a small firm can change its prices, products or opening hours the same week.
Avoiding diseconomies. Owners who have watched rivals grow into a mess often decide the extra size is not worth it.
Limited finance. Many simply cannot raise the money to expand, so smallness is a constraint rather than a choice.
Satisficing. The owner wants a comfortable income and a life outside work, not maximum profit. This is a legitimate objective, not laziness.
Technology used to favour size almost automatically. Online selling changed that, because reaching a small, scattered group of customers no longer costs a fortune.
Judging the decision to stay small
Advantages of staying small
Disadvantages of staying small
Highly customised goods and services, right down to visiting the customer’s home
Much more exposed to a downturn in the wider economy
Personal relationships build loyalty and free word-of-mouth advertising
Less finance available; some small firms cannot get a loan at all
Unusual products sold in small quantities at high prices can be very profitable
Harder to recruit and keep staff, because pay and benefits cannot match big firms
Fast, flexible responses to changing market conditions
The owner struggles to take holidays or sick leave, since revenue stops when they do
No diseconomies of scale to manage
Almost no economies of scale, so unit costs and margins are worse
Do not argue that big is better. Businesses of every size succeed. The useful question is whether the size of this firm lets it achieve its mission, and whether its culture and structure support that.
Worked examples
WORKED EXAMPLE
A firm has revenue of 800,000 and profit of 160,000. Calculate its profitability and distinguish profit from profitability. [4]
Step 1: calculateProfitability = (160,000 ÷ 800,000) × 100Profitability = 20%Step 2: distinguishProfit is an absolute amount of money left after costs. Profitability measures how efficiently that profit is generated from revenue, expressed as a percentage.
A firm with a larger profit can still have lower profitability, which is exactly why both figures are reported.
WORKED EXAMPLE
Explain two reasons why the owner of a successful bakery might choose not to open more branches. [4]
Reason 1 — diseconomies of scaleMore branches means managers, rotas and deliveries to coordinate, which raises average cost and can damage the consistency customers came for.
Reason 2 — satisficingThe owner may already earn enough and value their quality of life, so a second shop would add stress and hours without adding much they actually want.
4 marksSatisficing is a proper business term. Use it by name.
WORKED EXAMPLE
A family restaurant with strong local loyalty is offered finance to open six branches. Recommend whether it should accept. [10]
The case for growingBulk buying and shared marketing would cut the cost per meal, revenue would rise, and the brand would reach customers who never visit the original site.
The case against
The loyalty comes from the family being there. Six branches cannot all be personally run, so quality may slip, and diseconomies of scale could raise average costs rather than lower them.
What actually decides it
Whether the thing customers value can be copied. Recipes travel; a family greeting people at the door does not.
JudgementOpen one branch first and measure whether loyalty survives the moveThis depends on whether the finance is still available later. If the offer is one-off, the risk of waiting has to be weighed too.
💡 Exam tip
Calculate profitability whenever both figures appear. It is a fast mark and it usually changes the argument.
Never assume growth is good. Ask what the firm would lose by getting bigger.
Use the owner’s objective. A satisficing owner and a profit-maximising owner will make opposite decisions with the same numbers.
Link back to economies and diseconomies of scale — they are the cost side of this argument.
Stage the recommendation. “Expand, but test it with one site first” shows judgement rather than a coin toss.
⚠ Common mix-up
Profit and profitability are different things. One is money; the other is a percentage.
Growth is not the same as success. A firm can grow its way into diseconomies, debt and cash flow trouble.
Small does not mean struggling. Many small firms are highly profitable in niches large firms ignore.
Satisficing is not a lack of ambition. It is a deliberate objective and should be treated as one.
Market share and sales are not the same. Sales can rise while share falls.
Up next: Internal and External Routes to Growth — if a firm does decide to grow, it can build slowly on its own or buy its way there overnight. The two routes carry very different risks.
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