The thing a lot of folks seem to miss is that it isn't just D&D using the OGL, there are non-D&D games (such as Fate, Fudge. Etc) which license themselves using the OGL.
But they don't need to update the license they use, right? So the other games can just issue their existing and current material with the existing license and it's all good?
So, the exact wording of the license includes a clause saying you can distribute under "any authorized version" of the OGL.
I dont think people expected wizard's to try and interpretation that as something they can try and revoke. But they are trying and it might go to court.
Other communities were also concerned about the core team trying to take control of the system/assets. The Fate core folks specifically went with OGL to allay those concerns.
It just seemed like a good license to use to allow others to build on their games. Just like it's not just the FSF distributing original software under the GPL.
But the FSF is never a competing business (it's not a business) and the GPL doesn't grant the FSF any rights over your stuff. So the OGL is not really analogous.
> and the GPL doesn't grant the FSF any rights over your stuff
Neither did the version of OGL they published their stuff over.
Imagine that the FSF goes crazy and writes a new version of GPL which gives them ius primae noctis, and also in the same new version they state the previous old version is no longer valid. That is the approximate analogy here.
But that's not how the existing license works, so who cares about any new GPL license? Unless you explicitly said "I want my work under the GPL or whatever crazy new version of the GPL ever exists", with the extra detail that the GPL is designed by a business competitor who is jealous of your success.