The two chief enemies of the free society or free enterprise are intellectuals on the one hand and businessmen on the other, for opposite reasons. Every intellectual believes in freedom for himself, but he’s opposed to freedom for others.…He thinks…there ought to be a central planning board that will establish social priorities.…The businessmen are just the opposite—every businessman is in favor of freedom for everybody else, but when it comes to himself that’s a different question. He’s always the special case. He ought to get special privileges from the government, a tariff, this, that, and the other thing…There's a better one out there about business using the government to keep their competitors out of the way, but I couldn't find it.
--Milton Friedman, quoted in Reason magazine.
A principled free-marketer like Freedman gets it. Enron was in favor of carbon 'markets'. Regulations become a barrier to entry for competitors.