and they are also stealing most of the content.
anyway, in my eyes the mod scene is still where it was 10 years ago: making multiplayer shooters, and frnakly all the good ideas have been snapped up and recycled by major studios, either because modders get hired or the studios see something popular and imitate it and improve on it the way a funded project can.
people are also more entitled than they ever were, they want a mod to be a AAA game and that was acceptable (to a degree) back when making a AAA game could be done by half a dozen guys. but that is no longer the case. to provide the kind of experience people want now is much harder, if not impossible.
i think the mod scene simply needs to evolve, and put out the kind of games that aren't being made. but if you have that kind of talent that is able to create something like that, you are very likely to start an indie company and try and get some money.
modding, and expecting to hit the big times like the old days of cs and dod is pretty much over, especially as there are retail games that do everything better than a team of amatuers could do.
there's still a scene there and there's still a lot of people making mods, but the end result is quite lacklustre. look at AAA games that have millions of dollars of marketing put into them and end up having nobody playing after 2 weeks. the problem isn't entirely limited to mods it seems.