Some teams pass to set up the run but all teams run the ball quite a bit. The running back is not dying in the NFL the single running back who gets all the carries is dying, the running game is alive and well. The most passing teams in the league still run over 1/3 of the time and that doesn't count all the short passes, screens, and designed dump offs that act as runs. The NFL is still very traditional in their offense.
The best teams are roughly 50/50 in run/pass each year including the World Champion Green Bay Packers.
You wanna know Green Bay's numbers last year? 421 rushing attempts and 531 passing attempts. Iowa last year? 336 passes to 412 rushing attempts (not including bowl game).
No doubt there more passing in the NFL but you act like every team runs Texas Tech's offense. Many teams including some playoff teams rush the ball more than they pass. Ferentz's offense would be fine in the NFL.
Sure, all teams in the NFL still run the ball. And the workhorse back is definitely a dying breed. But the best teams still pass quite a bit more than they run these days.
Look at this year's rushing attempts. The majority of the league's best teams are in the bottom half of the league in rushing attempts this year. The better rushing teams of that bunch get higher ypc, so there's quite a few that are at least middle of the pack in yards.
But when you look at passing offense, the best teams are all in the top 20, and of the top 10, only Carolina isn't a contender. But in rushing offense, of the top 10, half of those teams are not contenders (Oakland, Kansas City, Jacksonville, Miami, and Minnesota).
The numbers don't lie: the NFL favors the pass these days. The days of running the ball be THE key to victory are long gone in the NFL. Those days died when the rules changed in 2004 to favor receivers (no contact past 5 yards).
Perhaps that's also one reason why the Ferentz/NFL rumors quieted down? He was a VERY hot ticket from 2002-2004. Because back then, he was a perfect fit with his philosophy. That's not the case anymore.
It's blatantly apparent if you watch the draft (or at least pay attention to the results). Backs aren't typically going in the top 10 anymore, and when they do it's usually considered a reach (see: Spiller, C.J.). Mark Ingram was the first back taken this year, and he lasted all the way until #28. Start getting used to that, because it's going to be pretty common for backs to wait around that long.