Not if people keep buying a second or third subscription for more hours! Listen people if you don't like the 6 hour limit, you need to speak-out with your dollars as well as your words and NOT GIVE EA MORE MONEY!
EDIT: Side note, those 6 hours will let you play AFTER the release as well. So I do not see EA ever giving more then 6 hours for any game. I could still play Madden 15 in "trial mode" the day of release and last night.