They already are: multiple low or modest cost, high speed satellite providers are targeting the US market for deployment in the next four or five years.
The dumber Comcast and AT&T are about the situation, the more money SpaceX is going to make on Starlink. Amusingly, Comcast is probably going to help get us to Mars.
Regardless of the rampant cynicism about competition (plenty of which is warranted), the low earth orbit competition is coming fast. Nothing can stop it at this point.