Dumbing down
Assuming we are only talking about intentionally installed API's that have to be specifically granted their access (i.e. not any subverted install/exploit) then this is just further dumbing down in action.
They are doing the same thing to Android. It's simply no longer possible to do many useful things without rooting (functionality that was not delegated to a specific permission, but completely removed)
Oh, and their drive to turn Android into IOS (not relevent to the story, just another thing to moan about!)
Just imagine if google had a monopoly on the unix market, they'd ban compilers "for our own good", and no system would be able to connect to anything but port 443 on a google-owned server.
Still, Nanny knows best. Us kids should not speak unless we're told to.