@eri @shroomie Actually I've realized that what I wrote may be confusing - these two points should resolve it;
- Free means freedom, not gratis, no matter how many people claim proprietary things are free because there's no direct payment.
- Unless the software is under a license or terms that respects the 4 freedoms, that license is irrevocable (provided some fair conditions are met) and has corresponding source code released for all published versions, it isn't actually free.