Big Government and Big Business are not mutually exclusive. The leftist belief that to oppose one is to support (or, far too often, means you're being paid by) the other is a false dichotomy.
Big Government and Big Business support each other. Big Business donates to Big Government advocates' political campaigns and in return those same politicians work to pass more regulations that force any competition with Big Business out of business. Lather, Rinse, Repeat ad infinitum.
Too much power in the hands of too few people is NEVER a good thing.