Do you not understand what happens without government regulation? Sure, governance isn't always perfect, but corporations are run by the same thing: people. The only difference is that governments can (not always, but can) be held accountable to the people, while corporations are only accountable to their shareholders.
Two simple examples of lack of regulation:
1) The sad state of the meat industry in the United States before the publishing of "The Jungle" by Upton Sinclair.
2) The 2008 Recession, which was caused by the fall of the unregulated derivatives market, and banks giving out risky loans to people who didn't qualify.
The natural state of capitalism is ups and downs. Unregulated capitalism has a history of WILD ups and downs. I'm not a Marx-loving anarcho-syndicalist here, just an adult that realizes the actual course of history. I was once a libertarian, too, as the ideas are attractive at first, but a thorough study of history shows that unregulated capitalism is accountable to no one, and causes only harm. If you can't accept this, you have more studying to do.