Re. Youtube, twitter et al, They're not publishers, and they're not a utility. They are marketing companies. How do they make money? Selling ads. Take that away and they vanish! There's the evidence: They sell ads.
But what about the whole Web? Without ad revenue and hucksterism, would subscriber fees cover much at all? Or would it start to fold up?
But what about the whole Web? Without ad revenue and hucksterism, would subscriber fees cover much at all? Or would it start to fold up?