You know there's a theoretical loophole. Ichio only indexes free porn games now. Ichio has a donation option. And visa and Mastercard are only going after adult content at the moment. A few non-free not porn games and donations as a studio is a option I mean you don't need to do anything as extensive as heram in another world. Or at least not exploring the world pre-the old king after all it had to have been vastly different. Shrug point is a side project or two would also help you in a few ways I hate to suggest that option do to it spreading resources but yeah you could also do a few doujins on some other sites to gain some income too.
Also would like to see some more things from jongs orginal world. It may be fanon but I don't think it was as normal as portrayed I mean isekai and books appearing should be suspicious but its just kinda accepted.