Because it opens up corruption and ruins it for the 90+% of those who have taken an athletic scholarship who are pursuing a degree. Most athletic departments aren't in the Big 10 and aren't making a profit, and they use the revenue that they generate from the revenue sports to fund athletic scholarships in the non-revenue sports. The UTEPs of the world aren't going to be able to keep up with the arms race, and whatever media exposure they currently enjoy is going to dry up as the gulf between them and the coming super-conferences opens wider. I fear that the UTEPs of the world will have to cut non-revenue sports, if not worse, to tread water, which eliminates opportunities for would-be student-athletes, many of them women, to pursue a degree.
If the purpose of COLLEGE athletics is to give opportunities for students to use their talents in pursuit of a college degree, then the reduction of these opportunities is contrary to that purpose.
There is already a professional league. Let the people who want to earn money playing a sport without pursuing a degree go play in the pros.
If colleges are for-profit professional sports teams, then why are they being held to Title IX standards? Does the NFL have to provide roughly 50% of their roster spots to women?