For example, I made a bad purchase and bought a Samsung SmartTV. Now I have a TV with a quad core ARM in it but I can't put my own distro on it because even though they are running Linux and hence GPLv2, Samsung has made recent patches likely to brick the TV with any attempts to install your own OS...
I think too many people have bought into the idea that GPL code makes for complicated legal issues that isn't worth the trouble, but I don't think that's the case at all. Neither is it the case that you can't profit from GPL code. All you have to do is provide source!
Anyway, I'm just saying I think RMS is a man ahead of his time even today, and as corporations and governments extend their tentacles of power into the digital world the last bastion of freedom for hackers is going to be GPLv3+ and not BSD (which enables putting users in prisons, eg Apple).