Capitalism needs regulating and not everything should be run by capitalists.
I have never seen any system in which capitalists ran everything.
It certainly isn't our system. And most of the systems where people claim as much, it's actually socialists running the companies. Like all those "private capitalists" companies in Tunisia, that just happened to all be run by members of the presidents family. All by random market forces I'm sure.
As for regulation, I'd be hard pressed to discover an example that actually was a benefit to the public. There was a documentary air a few years back, where at one point a guy in the auto industry listed off all the safety innovations found in Formula 1 racing cars, that are prevented by regulations from being introduced in production retail cars, and he also mentioned alternative cars that could not be sold retail, because regulations made it impossible to sell them to the public.
In fact there is a 'car' that is supposed to come onto the market sometime next year, with 3 wheels. The whole reason they made the vehicle with 3 wheels, is to avoid the expensive burden of regulations. (regulations on cars is massive, but 'car' is defined as 4 wheeled vehicle. 3 wheels avoids the regulations).
So as much as people claim regulations are so great, in reality, it only harms the consumer, at the benefit of the rich.