Ad-based businesses exist because a lot of people (including many on this forum) refuse to pay for anything. During the late 1990s/early 2000s, people hated paying for anything and demanded that everything on the Internet should be free. Well, that led to the vast surveillance machine which powers Google, Facebook, and every ad-tech business out there. They need surveillance because it lets them serve more relevant ads and more relevant ads make more money.
The bottom line is if you hate ad-based businesses, start paying for things.
The bottom line is if you hate ad-based businesses, start paying for things.