Not overly surprising.
I was informed one of my projects saved one company alone in excess of $90million - so I asked if they'd mind tossing a few bucks at the development hardware so I didn't have to keep scrounging around on scrapheap junk and being heavily in debt.
Answer (of course) being "nope".
There were a number of such stories.
Not to mention regularly finding my work (and other GPLed stuff) stuffed inside proprietary blobs with Big Scary Copyright Claims on them.