Milton Friedman: But it's always been true that business is not a friend of a free market. I have given a lecture from time to time under the title Suicidal Impulses of the Business Community... It's in the self-interest of the business community to get government on its side. It's in the self-interest of a particular business.[...]It's insights like these that attracts me to Economics, and keep me coming back for more...
But the real puzzle—puzzle isn't quite the right word—the real problem here is where do you find the support for free markets? If free markets weren't so damn efficient, they could never have survived because they have so many enemies and so few friends. People think of capitalism or free markets as something that obviously is supported by business. People think that if a business party is a party in politics, it will promote free market. But that's wrong. It will be in the self-interest of individual businesses to promote a tariff here and a tariff there, to promote the use of ethanol—
Russ Roberts: Special regulations for its competitor that apply just by chance to its competitors but not to itself—
Milton Friedman: That's right.
Russ Roberts: —or that they already comply with but their competitors don't happen to comply with.
Update: Here's a link to an article Friedman wrote on this subject at the Cato Institute.