Trump dominates on Twitter.
He gets free exposure and has a higher profile than on traditional TV.
Which fewer and fewer people watch anymore.
Just wait until Twitter decides to trump up (no pun intended) a reason to block the Trump campaign like they did the Breitbart journalist, Milo Yiannopoulos. I might be costly to Twitter, but I still wouldn’t put it past them to do it as a way to spite their enemies.