Half of the revenue does not mean half of the profit. Spending any time working with minnows may be time not worked for big companies. With big customers you ca

Half of the revenue does not mean half of the profit. Spending any time working with minnows may be time not worked for big companies. With big customers you can have much higher profit margins when they want to buy expensive services. Comparative Advantage https://en.wikipedia.org/wiki/Comparative_advantage https://en.wikipedia.org/wiki/Comparative_advantage