It is also why Facebook was so successful. It doesn't have 100 million set of eyeballs but, rather, a couple billion. This opens the door to a lot of opportunity for monetization. Sadly, the platform only went as far as selling advertising and data.
Facebook is a business, and its users are the products. YouTube is similar, but at least the content creators with partnership are receiving a part of the advertisements revenue of their videos as earnings.
Twitch, which is also a relatively successful website has another model. Subscribing to a channel costs money to the subscribers, and the owners of the channels are receiving a part of that money. The viewers can donate (tip) to the content creators, who mostly do livestreams.
YouTube is showing a relatively good example. Probably Facebook will not follow it. If the web 3.0 could show something like Facebook, but with earnings to the users, then the whole website would be different. Probably that would quickly ruin the natural usage, and the website would be full of scam.
If I see the advertised/promoted posts on Facebook, then it is already full of scam. But probably it would still worth an experiment. I would curiously see what would happen on it.