And, it is also true that totally unregulated competition results in things like the credit crunch
I totally disagree. The mortgage industry is one of the most regulated in our economy. Not only overregulated, but ridden by stupid regulations. No wonder it crashed and burned.
Notice that I'm not saying that regulations are not necessary. The protection of private property rights is a form of regulation that is necessary and works.
There's a big difference however between minimalist, necessary and intelligent regulations and heavy-handed, unnecessary and stupid regulations. Politicians spending my own money to control the loudness of my home theater from a desk in Washington is a perfect example of the latter.