TL;DR: In most cases, it’s pretty much impossible for a third party of any sort to come in and block access to an open source tool. They can make things painful and annoying, but they can’t act as a block. As for the relicensing issue, that too is also highly unlikely… but it’s also a very short-sighted perspective that, in my humble opinion, will ultimately serve as a detriment to the app (and the open source community around it)… especially in the case of creative tools.
That’s my thoughts on it at least, I’d love to know yours.
Also, as I mentioned in the intro and outro, this website now has a Resources section. Currently there’s a page for Tools that you can use in your creative projects and a page for Books for learning more about specific programs. I’d love to hear what you think of this addition to the site and what other things you think I should add in there. Just hit me up with a comment!