I think that anime boxing league thing went the way of selling out to patreon donations every week/month. At least they seem to deliver on some content. I figure they might make things into a game at some point, hopefully. Maybe.. At least what looks to be some of the framework is there from what I have seen on youtube.
I could see this being something along the lines of ready to rumble, but with the inverse side of things why teach people how to fish when you have the market cornered on fish? Why throw away the patreon money with a completed game when you can fleece the natives month over month (a la pure onyx).