I am against DRM in general, but I don't really understand the whole "free" software movement. Whenever I see the FSF (Stallman et al) deriding any and all soft

I am against DRM in general, but I don't really understand the whole "free" software movement. Whenever I see the FSF (Stallman et al) deriding any and all software that isn't open source and licensed for free use by anyone for any purpose, it just seems ridiculously naive to me. Does their ideal world really have zero commercial closed-source software? How do software developers get paid in that world? And why stop at software? Do they eat food from restaraunts that don't publish their exact recipes? Do they pay for commercial transportation (buses, airplanes, etc.) that restrict your destinations to pre-set terminals? Why does software get this special "it's evil if it's not open and free" treatment but nothing else? I find it truly bizarre.