Do they receive compensation for it? Did Facebook need permission to use their image. If they are compensated, Gene Wilder is making $ hand over fist. 
no
Didn’t think so. (Too bad for Gene)
Facebook doesn’t have anything to do with these memes. They may be shared on FB but no one connected to the company is involved with creating them.
:smack: Can’t believe I messed that up! (actually I can, cuz I’m a yutz)
Wow.
Hell, you can make your own if you want. Feel free to compensate the photo subject whatever you feel they deserve 
The majority weren’t even started on Facebook. Places like 4Chan, Quickmeme, Reddit, 9gag, digg, etc are the birthplaces of most of these sorts of memes.
KnowYourMeme.com has the histories of them, if you’re interested. Here’s the Gene Wilder/Condescending Willy Wonka one.