The fact that "We need to get in on the streaming thing" is probably said in the boardroom of every media company is exactly what's going to kill it.
I am willing to pay for exactly one streaming service. The idea that streaming services will become the "pay only for the channels you watch" is second to the fact that all but a few streaming sites will wind up being complete shit.
So far only YouTube and Netflix have passable interfaces, cross platform support, and a half-decent discovery algorithm.