Problem is what happens when someone claims google, amazon, and then stars doing shady stuff with it.

And maybe that somebody, was working for such organization and then left on bad terms and doesnt want to give login code or whatever.

It's not that easy problem to solve, and you need to have people on standby to resolve such issues, some of which might include layers.

Implementing namespaces in code are not even 10% of effort for this to work.