Yeah, but there's a good chance the parent poster is worth more the $7.50 ARPU to Twitter. They can also probably increase their ARPU more than they can increase a hypothetical subscription cost, which is why these comments about ad-based companies providing a subscription service aren't actually these no-brainer ideas.

Now with that being said, it would be nice if companies cared more about having sustainable businesses with healthy, non-intrusive user experiences than revenue growth.