Ohio State and the B1G are about overall quality of life for students and offering as many and a variety of varsity sports is part of that mission. Many of these take away few resources as they are niche and have low costs. They are also not fully funded which means many of the athletes are getting partial scholarships and pay the difference out of pocket. Finally Title IX plays a big part, sports like synchro swimming help gets girls scholarships to make up for all those football scholarships that make compliance difficult.
Then on the flipside you have the SEC which is only worried about a couple high profile sports and some schools only offer a handful a men's varsity sports so they are Title IX compliant. LSU has only 7 men's sports, most high schools in Ohio offer more boys varsity sports then that. The SEC doesn't even have Men's Soccer listed as a sport let alone wrestling and the increasingly popular lacrosse. So basically the SEC is a minor league for the NFL, NBA, WNBA, & MLB in team sports and the PGA & WTA in individual sports. They might as well treat these kids as pros and ditch the student label.