Expanding a business: methods of growth and economies of scale

Growth is rarely accidental. It's a deliberate strategic choice, with trade-offs in cost, control and risk. AQA expects you to know the difference between organic and external growth, with named examples and a clear understanding of how scale changes unit costs.

Why businesses expand

• Higher profits — more sales spread fixed costs over more units.
• Market share — bigger share gives bargaining power over suppliers and pricing power over customers.
• Survival — small businesses can be undercut by larger rivals; growth is defensive.
• Reduced risk — diversifying products or markets means a downturn in one area is offset by another.
• Personal ambition — entrepreneurs and CEOs often want to build something big.

But growth has limits — too fast, and a business loses control of cash, quality and culture.

Two main growth strategies

Organic (internal) growth

The business grows from its own resources — no merger, no takeover.

• Open new shops or branches — Greggs adds ~150 stores a year.
• Launch new products — Apple iPhone → AirPods → Apple Watch.
• Enter new markets / countries — Pret A Manger expanded into the US.
• Invest in marketing and brand — drives sales of existing products.

Advantages:

• Cheaper than buying another business.
• Keeps the original culture, brand and values.
• Lower financial risk — gradual expansion funded from retained profit.
• Founder/management retain control.

Disadvantages:

• Slow — can take years.
• Limited by retained profits or borrowing capacity.
• Competitors may grow faster via acquisitions.

External (inorganic) growth

Growth via mergers, takeovers or franchises — combining with another business.

Mergers

Two firms agree to combine into one new entity. Equal-ish partners.

• Example: Disney + Pixar (2006). Both contributed brand and IP.

Takeovers (acquisitions)

One firm buys a controlling stake (>50 %) in another. The buyer absorbs the target.

• Example: Microsoft acquired LinkedIn (2016, $26 bn). Tata Group bought Jaguar Land Rover (2008).

Franchising

A franchisor (e.g. Subway, McDonald's) sells the right to operate under its brand to a franchisee. Franchisee pays an upfront fee plus ongoing royalties.

Advantages of external growth:

• Fast — can double in size overnight.
• Access to new markets / customers / technology — Microsoft instantly got LinkedIn's 400 m users.
• Removes a competitor — buying a rival shrinks the market for what's left.
• Economies of scale realised quickly.

Disadvantages:

• Expensive — premium price often paid (Microsoft paid ~50 % above LinkedIn's market cap).
• Cultural clashes — many mergers fail because the two cultures don't mix (Daimler-Chrysler).
• Diseconomies of scale can appear (see below).
• Regulatory hurdles — competition authorities may block deals (e.g. UK CMA blocked Microsoft–Activision before approving with conditions).

Economies of scale

As output increases, average cost per unit falls. Six common types:

1. Purchasing economies — bulk buying gets discounts. Tesco buys lorry-loads of beans cheaper per tin than a corner shop.
2. Technical economies — large factories can use specialist machines too expensive for small ones. Car plants use robotic welding only viable above ~100 000 vehicles/year.
3. Managerial economies — large firms can hire specialist managers (HR, IT, finance) instead of one generalist.
4. Marketing economies — a TV ad costs the same to run whether the firm has £1 m or £100 m of sales; cost per pound of sales is lower for bigger firms.
5. Financial economies — banks lend more cheaply to large, established firms (lower default risk).
6. Risk-bearing economies — diversified firms spread risk across products and markets.

Diseconomies of scale

Beyond a point, growth raises unit costs:

• Communication — more layers of management → message gets distorted.
• Coordination — more people, sites and products → harder to keep everything aligned.
• Motivation — staff feel like a number; engagement drops.
• Bureaucracy — slow decision-making, red tape.

The graph of unit cost vs output is U-shaped — falling, flat, then rising.

Sources of finance for expansion

• Retained profit — cheapest, most popular for organic growth.
• Loans — banks, bonds, peer-to-peer.
• Share issue (limited companies) — sell new shares to raise capital. Only practical for plcs.
• Crowdfunding / venture capital — for high-growth start-ups.
• Government grants — limited, sector-specific.

The more risky the growth strategy, the more equity-based finance (shares) is preferred over loans.

Examiner tips

For 6- and 9-mark questions, contrast at least two growth methods with examples and conclude with which is most appropriate for the business in the question. A new café will grow organically; a global tech firm chasing a competitor will acquire.