Size of the market: some markets are too small to sustain very large companies
Nature of the market: in some markets, such as hairdressing, painting and taxi driving, the set up costs are relatively low. There is little to discourage new businesses joining the market. Also, in some markets, business serve a particular market niche
Lack of finance: some businesses would like to grow but they are not able to raise the finance need to expand
Aims of the entrepreneur: some owners do not want to grow their businesses. They may be happy running a small business. They may be making enough profit to satisfy their needs and do not want the responsibility of taking on more workers
Diseconomies of scales: Once a firm reaches a certain size, any further growth results in diseconomies of scale and average costs start to rise