There's a lot of people that care about gaming, even if you don't.
The gaming and demoscene cultures don't care 1 second how much their tools cost, the openess of hardware and software tooling, rather the achieved results and getting their stuff on the hands of users, regardless how.
The GNU/Linux culture is all about the ideology of having stuff for free, replicating a desktop experience as if CDE was the epitome of UX, fulled with xterms.
Of course I am generalising and might get tons of counter examples, just noting my personal experience regarding friends and co-workers.
Uh, no. It's about having the freedom to fix, improve, or otherwise modify the software you use. Being free-as-in-beer happens to be a requirement for that, but it isn't the goal. Think about it this way: free software developers get paid to do work, instead of getting paid for having done work like proprietary software developers. You pay me to implement feature X, which is then released to the world for further improvement in the future.
Yeah, no. Having free stuff (as in speech), yeah. Having stuff for free ? That's not the UNIX culture...