If an entity has a product that has a trillion people choosing it, the marginal benefit to society to build an entirely new product for 1000 people or so isn't worth it. The people whose time would be required to produce that second product for a very, very small 1,000 person market would better serve society by working on other goals.

Nor should those 1,000 people get to try to use the government to tell the other trillion what product they should have to buy.