You seem to forget that Ohio State beat Alabama in the Sugar Bowl in 2015 - then went on to beat the Oregon Ducks to win the National Championship. Players come and go - so, that makes a difference. If you didn’t think today’s game was excising, then I don’t know what to tell you.
No, I’m taking a jaundiced 50 year overview. Obviously, Ohio State and Michigan don’t blow it EVERY year, no matter how hard they may try. But they collapse in big games more regularly than any other of the reputed top programs. And they often find ways to look bad doing it.