What best protects a firm from being forced to sell its product at an unfairly low price?

What best protects a firm from being forced to sell its product at an unfairly low price is the existence of many possible consumers.

Explanation:

The fact that a product made by a company can be sold to an absolutely massive number of consumers (nowadays, with internet sales alternatives, it is absolutely possible to sell worldwide) makes firms not have to fall into the alternative of selling their products at low cost to recover their investments and not incur losses. Otherwise, being impossible to sell in a smaller market, companies should lower their prices to try to attract a higher number of buyers.