Warcraft 1 and 2 are being removed from the DRM-free GOG.com at the behest of Blizzard, for sadly obvious reasons.

With the release of Warcraft I and II Remastered, Blizzard is delisting the original games from sale. And with that GOG promises to preserve them.

GOG (once short for Good Old Games), which is owned by Witcher 3 and Cyberpunk 2077 maker CD Projekt Red, announced a new preservation program in which it promised to maintain old PC games and continually modify them to run on current hardware for the foreseeable future.