All of this is right, BUT you're missing a point on the finances here.
Yes, schools like Georgia and Alabama are selling out 10-15,000-seat arenas for gymnastics. BUT they only have 5-6 home meets a year, meaning revenues on those ticket sales are still well below those of sports like women's basketball, baseball, softball, even volleyball, because those sports have 15-20 home dates that produce more total revenue with fewer attendees per date.
Gymnastics has a fairly small roster, BUT total spending per student-athlete is higher in gymnastics than in any other NCAA sport other than men's basketball. Gymnastics is, to my knowledge, the only sport other than diving where schools are required to carry catastrophic injury insurance, which is extraordinarily expensive. The travel is also extensive (and expensive) because so few schools nationally have gymnastics, you have to travel far and wide for non-conference meets.
I support women's sports as much as anyone, but I don't believe you'll see UT add any sports at any point in the foreseeable future.