That point about social networks is true, but it's more of a symptom of the internet at large.
Running things on the web isn't free and most of the major innovation has stemmed from trying to hide that fact from people.
It started in the late 80s with donations to the guy that ran your favorite BBS. But that was not sustainable, so banner ads started showing up, but they didn't pay out enough. Then the pop-up and was born, but it turns out that people really hate those. So then they did away with them entirely, instead harvesting data about the users to sell to advertisers.
Now, there are basically 2 paths forward. Host your own microservices that connects to a larger network, widely spreading out hosting and storage costs across the userbase. Or, pay a subscription to access a service with the understanding that they won't advertise or sell your data.