Does that actually happen in the game industry? Admittedly, to some extent that's the treatment Will Wright got from EA when Maxis was acquired (they weren't 100% hands off, but he could win basically any concessions he cared enough about), but there aren't very many people with Will Wright level freedom at big studios.
E.g. Buffett / Berkshire are famous for letting their subsidiaries be run by the original, passionate management.