Jim Harbaugh has been given a one-year suspension and a four-year show cause order for his role (though he denied both having any knowledge of it and being uncooperative with NCAA investigators) of the recruiting and scouting violations at Michigan. (I suspect he didn’t see much, because schools make sure their head coaches don’t see stuff they’re not supposed to know about.)
Since he’s off to the NFL with an $80 million paycheck, this is no skin off his nose.
There is no comeuppance. If you get the glory and later it was revealed as a big cheat/lie there is no way to undo the plaudits you received.
That being said what Michigan did wasn’t the worst. I think grayshirting, producing illiterate football athletes, kicking injured players off the team without medical care, etc. is worse