It costs money to host video. The volume of advertising you sell supports your costs, with a fraction going to the content creators. Using information you gathe

It costs money to host video. The volume of advertising you sell supports your costs, with a fraction going to the content creators. Using information you gather increases how much advertising you can sell. The more advertising you sell the more money everyone gets. Having a low cost infrastructure for video streaming and good advertising deals is not a monopoly, it's an investment.