The closer the competition the smaller the 'evilness' that would make people switch.
The same company can be perfect in one country and a 'evil' in another depending on the situation.
I seem to recall people reporting that Comcast is actually just fine in many areas with a second viable provider. With SpaceX, that would be all of them.
Power corrupts. Therefore, power in the market also corrupts.
A decent heuristic would be whether said corporation manufactures flamethrowers. Wait...
Obama and Musk are good looking Bond villains. (The former had assassination sky robots, ICBMs, and a military. The latter has rockets, oceangoing spaceship landing pads, and huge enigmatic installations in the middle of the desert.) Putin and Trump are bad looking Bond villains.
* not flamethrowers
* manufactured by a third party
sorry, I know you are joking, but I couldn't help myself.
Not to mention that that kind of predatory pricing is illegal in many countries.
Being able to break the comcast/att/verizon effective monopolies across the USA would (hopefully) have great positive effects. At least competition would bring prices down for low-latency land-based connections.
Of course, you're swapping control of your internet connection from a "mostly evil" to a "not yet known if evil" corporation.