There are exceptions to every "rule," if you can even consider this a rule. When publishing to the App Store, the form says your app name must be between 2-255

There are exceptions to every "rule," if you can even consider this a rule. When publishing to the App Store, the form says your app name must be between 2-255 characters, and it cannot match a name that already exists. So if you want to make an app listing called "Cloud," but that is taken, you may have to give it the name "Cloud — The Coolest Storage Solution" or something else. However, if you have the trademark to an app name, you can contact Apple and they'll amend or delist the other app, and let you have it. This isn't even limited to Apple; I got a Twitter handle that was taken, but inactive, because I had the trademark. Every single company will do this to cater to businesses, especially large businesses, because businesses often end up buying ads or onboarding lots of their employees or users onto the platform. That's just the nature of the game. Apple's App Store is certainly full of flaws, but making exceptions for large players is not unique to Apple or any platform.