So? That's up to the user to decide.
Otherwise they're competing with a lot of other people interested in what the phone should and should not do.
If they own a hammer, they can do what they like with a hammer, but a phone is not a hammer. It's a complex arrangement of molecules, licenses and competing group interests.
I'm sure if someone found a way to shove ads and place restrictions on the use of your hammer they would.
People make a big deal out of those differences though, go figure!
Otherwise your line of reasoning boils down to “it exists.”