> The FSF wouldn't participate in a lawsuit like this because ...

Because in reality the FSF is a WELFARE program for RMS.

Look, I'm done defending the FSF and the GPL. I worked professionally on open source software for over 20 years, but I'm just another former Red Had employee. But oh boy have I seen some stuff, and have seen how the open source sausage is made. I could probably write a wall of text about how the open source world is populated by a bunch of people with various kinds of pathological personality disorders. I certainly consider some of those crazy people my friends, but we have to recognize the nature of these folks.

RMS has to eat. That's why the FSF will never get involved with any big legal controversy. RMS cannot afford the legal expenditure from the modest stream of donations given to the FSF. But even if lawyers were willing to engage pro bono, they get disenfranchised by RMS and his specific quirky personality disorders.

But whatever. In my humble opinion... I highly doubt these European open source zealots will make much progress. On the one hand they say closed source interoperation with GPL code is a violation of the GPL, and on the other hand they say closed source code must interoperate with GPL code, or else... Something something European this-or-that... I think these are nice people, but clearly crazy. Then again it's not quite clear what these crazy people are chasing after? Maybe they merely want API documents, but probably they want to run GNU Hurd on Apple silicon