Title IX doesn't require a school to be part of the NCAA. It prohibits sex-based discrimination in any school or other education program that receives funding from the federal government. So if they can completely divest from any govt. money, then you might be able to do something, the question though would research money from federal sources that go to a school like UCLA (over a billion per year in research money) count, grants, would state money that was funded by some federal money count, just don't see it. Below is most profitable schools for football. Doesn't compare to the federal government provided direct funding to California public higher education institutions through several rounds of stimulus packages, at a total of about $2 billion for the community colleges, $1.5 billion for CSU, and just under $1 billion for UC. This was stimulus money in just for 2021. Nationwide colleges get over a Trillion dollars per year.
NCAA or no NCAA, if they receive federal money they must follow Title IX.
Texas – $92 million
Tennessee – $70 million
LSU – $58 million
Michigan – $56 million
Notre Dame – $54 million
Georgia – $50 million
Ohio State – $50 million
Oklahoma – $48 million
Auburn – $47 million
Alabama – $46 million
Oregon – $40 million
Florida State – $39 million
Arkansas – $38 million
Washington – $38 million
Florida – $37 million
Texas A&M – $37 million
Penn State – $36 million
Michigan State – $32 million
USC – $29 million
South Carolina – $28 million