The biggest example of your last point that I've seen first hand is Electronic Arts and Frostbite. Mandating that all EA games be made with their own engine ha

The biggest example of your last point that I've seen first hand is Electronic Arts and Frostbite. Mandating that all EA games be made with their own engine has caused so many delays, rushed games, and broken products by teams who have already proven they can deliver amazing games on their own terms.