The old profit motive. The internet went from a collection of places where we cooperate with each other, or simply hang out, to one giant market place where everyone is trying to sell you something. Those other places still exist, but search engines won't help you find them. There's no money in it for them.
Yeah the early internet was a public facility funded by the government. They chose to privatize it and it became a cesspool of advertising and corporate rent extraction. Very lucrative, created a lot of profits for American corporations. Working as designed isn't it?
