> I am kind of surprised there isn't a media company with a twitter clone. The same reason there isn't a traditional publisher with an Amazon clone. One-stop s

> I am kind of surprised there isn't a media company with a twitter clone. The same reason there isn't a traditional publisher with an Amazon clone. One-stop shopping does win, but very few traditional media companies would willingly distribute content for their competitors (probably you could replace "very few" with "none"). Even if they were willing to do that, the antitrust people would be on their butts in short order.