I doubt it will happen. They are having a lot of trouble selling as many copies as they want already, and if they believe that charging more for their games will make up for the number of people who can't afford that price, than they are dreaming. I really don't think they're dumb enough to think this will make them more money, because EA seems more aware than anybody of the alternate options available to people (used, rental, steam), because they've been trying to combat them all generation.
I think it's much more likely that we will just see more scummy dlc, and microtransactions. That way they can still get all of the people who can only afford a 60 dollar game, and the people who care enough about a game to spend 80 will spend that extra 20 on the dlc and microtransactions anyways.