@pawlicker Might be some viral marketing stunt, as Vinny's stream and some other videos are yet to be struck down. Either way, those collectors are mentally ill greedy babbies.
There was a scandal a while back where a collector who was trying to get into the biz removed Akai Katana and DoDonPachi SaiDaiOuJou from MAME because he had the arcade rerelease rights...and it's funny because the former was in MAME for a year or so before. Half his anger was from it being playable for everyone, half was arcades in poor countries were converting CV1000 PCBs to DDP SDOJ (and the original ROM got released because said arcades were flashing the shitty romhack the group who had it made as a teaser first to PCBs and to avoid that from causing issues).
Akai Katana is now on Steam BTW and the composer was literally the same one who did many PC-98 VNs along with more games and it was unfortunately the last game he worked on before he died :(
@pawlicker >half was arcades in poor countries were converting CV1000 PCBs to DDP SDOJ Heard they also like ripping tracks from DDR/PIU and putting them into machines with Stepmania installed. There's this article that covers the reverse-engineering of protection schemes and mentions the issue. https://habr.com/ru/post/179067/
Everything on here is basically "hoarded" knowledge that was being held by arcade sceners trying to make money off of it in some way, shape, or form with regards to piracy.