Corporatists tend to parade around as if regulations are what limit competition when they're the ones writing most of them to keep competitors (both large and small) at a disadvantage. Any sufficiently large and concentrated capitalist system becomes a corporatist system.
Actually that's one of the big things people misunderstand about capitalism - it doesn't have to be competitive. Capitalism can, and does and wants to thrive in a monopoly. Capitalism and free markets are two different things and the latter is far more important though they are often conflated.
At least the Wikipedia article names competitive markets as central aspect of capitalism. I agree with your sentiment though. Companies are basically little bubbles of monopoly in a sea of free markets. But the optimal state for a company (and the owning capitalist) is no competition at all.
