> The only way to have market competition is to soundly enforce it.

Which is why NYC taxis are so cheap. All the market competition cultivated by their sale of taxi medallions for $1mil+.

> One of the single most important roles of government is to eliminate heavily unbalanced concentrations of power

I've seen no historical evidence that any government, ever, has even attempted this "role". It would be a little weird if they could manage to do it considering that they are heavily unbalanced concentrations of power themselves.