If there was no built-in scaffolding of corporate status and corporate law, and it were just individuals operating in a free market forming whatever arrangements they want via private contract law, it's at least possible that large, centralized entities wouldn't emerge as easily or as frequently. From that perspective, the modern "sea of centralized entities" version of capitalism is itself centrally planned: the government decided that it'd be best if the economy were made up of a sea of centralized entities, and wrote the rules so that it happened.