Is there a word or expression in English to describe someone who has the power/ability/skills to act upon something, but we already expect them not to do it because they see themselves as not in a position where they need to take an effort to act?
It doesn't necessarily refer to a person, could be a corporation as well (and quite possibly most uses of this word/expression would actually refer to companies I believe). It is somewhat related to an adage that says "the difference between the rich and the poor is that the rich is allowed to make blunders for a longer time." But this would be its reverse logic, in the lines of "since I am the rich, I will not make anything at all, why should I bother?"
Two examples of where this word/expression would fit:
The X App has a serious problem of user experience that could be greatly improved with a few simple features, but since they have virtually no competition, they [are] *** and we'll never see those things implemented.
Company Z should really step up their game, Franchise W has become stale for over a decade now, but since the fans keep coming, they [become] *** and just rehash the same thing over and over again.
"A is not compelled to do B" is an expression that might come to mind, but I'm not sure if it could convey what I am trying to present here.