Disagree. Otherwise they'd still be in the Big 12.
Disagree. If you asked their fans whether they'd want to go back to their glory years of being a national championship contender every year but not being in the Big 10/SEC OR cashing huge Big 10 media paychecks but having 6 win seasons, they'd choose the former hands down.
I'm not saying they'd be a whole lot better if they were in the Big 12 (pretty confident they wouldn't be). I'm saying winning trumps everything, including money.