I do wish Twitter, FB, IG etc offered a no-ad subscription to users. Charge folks 3-4x the expected per-person revenue and it's a win-win, right?
The only thing I can think of that would make them not do this is that maybe the folks most likely to pay $15/mo not to see advertisements are the same folks advertisers most want to get in front of. Expendable income and willing to pay money for convenience and personal taste.
Yeah your second paragraph is the problem. Though more importantly, most people who can pay won’t be paying $10-20 a month for a service that is otherwise free. And now the service has to provide this paid tier to a tiny portion of their user base.
The only thing I can think of that would make them not do this is that maybe the folks most likely to pay $15/mo not to see advertisements are the same folks advertisers most want to get in front of. Expendable income and willing to pay money for convenience and personal taste.