The #1 college franchise in money is University of Texas, and OU and A&M are no slouches themselves.
BYU would probably be #4 in the Big 12 in money brought in. The Big 12 is probably the 2nd best football conference and the 3rd best money conference in the country, behind the SEC and Big 10. It isn't the MWC/WAC and it's got more cache and success than the PAC-10, ACC and Big Least.