Capitalism will keep all the private providers in check. There's no way Comcast and it's ilk would behave the way they do if they had to compete for your business.
Bullshit. Just one look at how those same telecom companies have raped consumers with shitty cell phone plans, locked in hardware, insane overage and roaming charges is enough to prove that capitalism does not keep providers in check. Only strong regulation by the government that you feel should be limited has ever done anything to slow down any of it.