All FAANGs have lawyers thinking about GPL, copyleft, AGPL, and have policies what to use by default for their own code, so you can be damn sure they are fully aware of FSF and what they are doing when they invest in LLVM and change the default shell to zsh and encourage Apache 2.0. The "Open Source" movement is explicitly a conspiracy to avoid using the term Free Software.
LLVM by the way happened in a good deal because Stallman refused to have GCC dump the AST. This created an area where LLVM could provide extremely valuable functionality which GCC just refused to offer at all.
And with that sort of maneuver, GNU lost exactly what made their stuff popular in the first place: that they provided better tools than what commercial Unix used to come with.
