This is only half the argument, though. Yes, companies charge as much as possible, but prices go down when a competitor can offer a comparable good at a lower price. Some markets clearly have features that make competition harder.
Republicans argue for "free-market solutions" which are actually government granted or encouraged monopolies where no competition exists.
There lots of examples of free market capitalism making the world a better place and markets failing as well. There are examples government run services providing great consistent services and there are examples of government bureaucracies soaking up budget and graft in their own or lobbyists interest.
Which tool do you think will work best in this situation and why? How do you plan to deal with the inherent problems of government involvement in ISP regulation?
I'm just tired of "free market solves all" vs "corporation are evil, government is universal solution". We learn nothing and convince no one.