They probably would, but there isn't really a userbase of 84 million. A lot of those have moved over to current gen, are multi console owners, have lost interest in buying new games, or their PS3s have broken. Even of those left only the racing game fans would be interested.
It would still be 50 million +(userbase that is, not racing fans) (and that's being pessimistic).
Edit: Heck, Sony have sold more PS3s in 2014, than MS has sild XBOs in the same period.