It's hard but what if nexus would just fight steam / bethesda with their own weapons but by the rules of the modders. What if you create your own service for selling mod's and offering the mod's the same time for free on steam workshop ? The worst which could happen is bethesda start's sueing this service, which could give enough attention so you find a solution with bethesda of being allowed to sell mods. At this point steam has a real competition and every sane moder would go to the place where he gets more from the cut. If they start sueing single mod's they start removing mod's from steam workshop too which would hurt both companies much more, so i don't expect them to do it , also the mod's you sell over there could be small mod's , mod's which aren't dangerous even too loose or give up. If you are upfront with this idea towards your friends, i'm even sure most of them will support you. Since both the service and the mod's are basically fine to loose (extra service / special mods) you might be able to force them to show their true face. Also if you stick together you could put the money for probably happening legal fights. If the legal fights don't happen , you just give the money to the mod authors. Again this is just a idea.