Product owner is the one who analyses requirements, decides what should be implemented, and creates user stories for programmers. Currently programmers can use AI to help implement user stories but in future probably AI will be good enough take and implement user stories on its own. In more distant future it could replace product owner too. So that CEO can just talk AI directly into making a great product without much details, but at that point businesses like this will be less valuable because many can do that and there's no need for devteam and less need for investments.