Comment by tsimionescu

Micropayments are actually a huge problem, which is a big reason why no one has ever successfully implemented what you're suggesting on any large scale. Email spam is a major problem, and has been almost since its inception, yet the only effective solutions have been the ones that increased centralization and made it harder and harder to run your own email server. And even with all of these modern solutions, a LOT of compute is burned by every single MTA to filter out the spam that goes through for their users based on content filtering.

And this disregards the simple fact that the only people willing to pay to have their words seen are people who are getting more money out of this - i.e. spammers (and yes, advertising in general, including "influencers", is spam in my book).