Usually the free sort. But even paid hosted services aren't exempt. Amazon competes with sellers on marketplace. And also competes with some of its cloud custom

Usually the free sort. But even paid hosted services aren't exempt. Amazon competes with sellers on marketplace. And also competes with some of its cloud customers. The key is level of competition or dominance. It's wise to start looking for or creating alternatives when a company has less competition and becomes more dominant. Because if its power reaches a certain point, everyone loses. The company loses cos it won't innovate any more. Customers will lose on many fronts - customer service, features, stability, price, stupid restrictions...