It's a beautiful theory.
The most obvious counter-example would be patent/copyright/trademark trolls.
Another might be financial services companies who sell worthless derivatives as AA grade. Or the analysts who provide those grades. Or the brokers who make the worthless loans the derivatives are based on.
And does it need pointing out that without the government's intervention, banks that give out irresponsible loans would simply go out of business?
Whether they're effective or not is another debate? The truth or falsity of your preceding "fact" is unimportant?
IP trolling is the patenting of obvious stuff (or buying out the rights to dumb patents) for the purpose of harassing other parties with legal threats. Whether IP law really does encourage innovation in general or not, that activity clearly does not encourage innovation, and it doesn't "produce value." It's called rent-seeking for a reason. They don't want to get paid for producing value, they want to own things. It's a return to the principles of feudalism.
And does it need pointing out that without the government's intervention, banks that give out irresponsible loans would simply go out of business?
Focusing on the banks alone is missing the forest for the trees. The whole mess involved a stack of businesses from mortgage brokers to banks to investment firms to financial services firms. And there was fraud, dereliction of duty, and malfeasance at every level.
Most of those businesses haven't had any "government interference," and are doing well enough, considering how badly home sales have stalled. Some have absolutely made out like bandits.
Moving the goalposts.