So Valve or Bethesda went ahead and did it, depending on which side of the story you subscribe to – they threw Skyrim modding under a bus. Previously 100% free domain, mod creators can now sell the content they made for Skyrim on Steam Workshop and receive a 25% cut of proceeds. The remaining 75% are split between Valve, which hosts the marketplace, and Bethesda, which developed the game.
Questionable business practices aside, this was a long time coming. Since the early days of PC gaming, modding has been regarded as standard practice for enthusiast PC gamers. The vanilla game would be just a starting point, and they could either roll up their sleeves and tweak, or download someone else’s modifications to enhance the game, at least in the eyes of the beholder.