You've changed the subject. We were discussing whether one ought to use Google's term for it, or the term that's been used to describe this action since (I assume) the beginning of personal computing. Not whether Google is legally allowed to make the change.

My reason for bringing up the "selling point" was to bring attention to the language -- "You can install any app you want" has always been the common refrain when I see friends get into a debate about IOS vs Android. People are already using the term because it makes the most sense.

"You can install any app you want"

the asnwer is not anymore