Many bloggers are trying to do it as a way to gain income at this point, and the ads are either all over the site or inserted directly into the "content".
So yeah, mentality needs to change to stop seeking revenue out of everything...
That's not to say your prediction is wrong, just feels extremely unlikely, barring some massive regulatory upheaval changing the internet's current paradigm.
The other option is everyone spinning up and hosting their own sites, which will not happen because Helen the mommy blogger has 2 kids to deal with and photos to edit and content to write so she does not also want to learn how to set up hosting and write HTML.
I'd like for certain things to "go back to the way they were" but that's just not how it works usually.