Presumably the long term bet here is that a lot of men will pay handsomely to watch young female pro volleyball teams playing so there are massive sponsorship and media opportunities. It’s basically Victoria’s Secret mk2.
I doubt it. Men can just pay for better creators/entertainment on the internet oh not to mention betting.
Never underestimate the commercial potential of the male gaze. There may well be other 'entertainment' that men can watch on the internet, but they can't invite their work buddies and girlfriends along. Or maybe they can. But as soon as private equity bros start piling money into "pro women's volleyball" you have to assume there's some ulterior motive.