given that dolphin is open source, a company could be created just to litigate the issue. That is, to upload dolphin on steam. without the original team permiss

given that dolphin is open source, a company could be created just to litigate the issue. That is, to upload dolphin on steam. without the original team permission, and to contest the DMCA claim. If they'd have grounds or not, I don't know, but the liability could be limited to them, so, there is not much to lose (if, say, the EFF is interested in the case)