Competition is a central tenet of capitalism. Collusion, particularly collusion between govt and private enterprise, aims to reduce competition. So it follows that such collusion is a perversion that goes against the central tenets of capitalism. Which is why is gets a separate name, like crony capitalism, to differentiate it.

It’s no different than saying “dictatorial socialism”. The fact that a rather simple distinction has to be explained multiple times by multiple people becomes a chore and a Sisyphean task when it is clear someone doesn’t want to acknowledge the difference.