No. That talent gap has always been there. There is still an ebb and flow (with exception to elite coaches like Saban and Meyer).
USCw used to dominate, but they've been average since Carroll left.
Nebraska used to dominate under Osborne, but now they're average/above average.
FSU used to dominate under Bowden, then they became average under Bowden, then they started to dominate again under Jimbo, but now they're just above average.
Miami used to dominate, but lately they've been average.
Alabama is dominating now, but prior to Saban, they were pretty average.
Some institutes/universities allow for more success than others (e.g. Ohio State, Alabama, LSU, USCw), but you still need a great coach to pull it off. The coach is quite valuable in college football ... hence the annual coaching carousel where schools attempt to find the next Meyer/Saban/Carroll/Osborne-type of coach.