Just read the "Proof-of-Learning" article, where "learning" is a bit of a misnomer, but this is already a way of getting a huge adoption. I disagree that even with the "idealistic" setup, it will be restricted. People will play with the "rules".
If you go by the "Proof-of-Learning" model, you could still get huge returns on just running memes.  

If say 1,000 different humans read the published content to completion, then the content now has proof-of-value. At that point the content creator gets issued 50 tokens.