Dynamic markets, competition, and risk versus uncertainty

Dynamic markets

A dynamic market is one that changes rapidly or over a short period (the October 2024 WBS11 mark scheme gave 1 mark for 'changes' and 1 for 'rapidly / over a short period').

Causes of change:

• Online retailing: consumers buy through websites and apps, so firms need delivery, websites and digital marketing. The ONS reported that the share of GB retail sales made online was 27.6% in August 2025 (27.7% in July 2025).
• Innovation: new products and processes (streaming replacing DVDs) create new markets and destroy old ones, and drive market growth.
• Changes in tastes, incomes, technology, laws and the arrival of new competitors.

Adapting to change means monitoring the market (market research), being flexible, investing in new products and channels, retraining staff and sometimes leaving declining markets. Firms that do not adapt lose sales and may fail.

How competition affects a market

When there are more competitors:

• Customers have more choice, and prices tend to fall.
• Firms must keep costs low and/or differentiate (better quality, service or brand) to keep customers.
• Profit margins are squeezed, and weak firms may leave the market.
• Firms are pushed to innovate, which benefits consumers.

With few competitors, firms can charge higher prices and may have less incentive to improve. Firms respond to competition by cutting prices, improving the product, promoting more heavily, building loyalty schemes or finding a niche.

Risk and uncertainty

• Risk is a situation where possible outcomes can be identified and their likelihood estimated or measured, often from past data (for example the chance that a delivery van breaks down, or the proportion of customers who return goods). Risks can often be planned for or insured.
• Uncertainty is a situation where future outcomes and their likelihood cannot be predicted or measured (a new rival's technology, a pandemic, a sudden change in fashion).

Businesses reduce risk through market research, test marketing, insurance and spreading products across markets. Uncertainty cannot be calculated, so firms rely on flexibility, contingency plans and cash reserves.

Worked example

A clothing retailer finds that online sales have grown each year while visits to its high street shops fall. Explain how it might adapt.

1. Identify the change: a dynamic market moving online.
2. Adapt: invest in a website and app, offer click and collect, use social media advertising.
3. Reduce costs of the shops: close the least profitable stores or renegotiate rents.
4. Risk of not adapting: rivals capture online customers and sales fall.

Answer: It should shift resources to online channels while keeping shops that still attract customers, to avoid losing sales to online rivals.

Check yourself

1. Which is the best definition of a dynamic market?
   • A market with only one seller
   • A market that never grows
   • A market that changes rapidly or over a short period
   • A market where prices are fixed by government
   Show answer

   A market that changes rapidly or over a short period. Pearson's October 2024 scheme: changes (1) rapidly or over a short period (1).

2. Which situation describes risk rather than uncertainty?
   • A shop knows from past records that about 3% of goods are returned
   • A rival may launch a completely new technology
   • A pandemic might close all shops
   • Consumer tastes might change in unknown ways
   Show answer

   A shop knows from past records that about 3% of goods are returned. The return rate can be measured from past data, so it is a risk.

3. The ONS reported that 27.6% of GB retail sales were made online in August 2025. Out of every $500 spent in shops and online, how much was spent online?
   Show answer

   $138.00. 500 x 27.6 / 100 = $138.

4. What is the most likely effect on existing firms when many new competitors enter a market?
   • Prices rise because demand rises
   • Prices and profit margins are pushed down
   • Firms no longer need to innovate
   • Customers have less choice
   Show answer

   Prices and profit margins are pushed down. More rivals means more choice for customers and pressure on prices and margins.

5. Explain one way a business can adapt to a dynamic market.
   Show answer

   It can carry out regular market research to spot changes in customer needs and then develop new products or sell online so that it keeps its customers.. Monitoring the market and responding with new products or channels.

6. How can innovation lead to market growth?
   • It always reduces the number of firms in the market
   • New products attract new customers and create new uses, increasing total sales
   • It reduces consumer choice
   • It fixes prices at a lower level
   Show answer

   New products attract new customers and create new uses, increasing total sales. Innovation creates new demand, so market size grows.

7. Explain the difference between risk and uncertainty.
   Show answer

   Risk is when the possible outcomes and their likelihood can be measured or estimated, for example from past data; uncertainty is when future outcomes cannot be predicted or measured.. Risk is measurable; uncertainty is not.

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Sources

• Pearson Edexcel International Advanced Subsidiary/Advanced Level in Business specification (2018)
• ONS: Retail sales, Great Britain, August 2025
• Pearson WBS11/01 mark scheme, October 2024 series (published January 2025)

Last updated 8 November 2026. Spotted a mistake? Tell us.