"- you have to earn more than 200000 $ per year with your game"
Pardon my french, but this argument is fucking stupid. It's basically saying "I'm not going to gross $200,000 in any of my games, so this isn't a problem for anyone else." Which is stupid even when taken at face value.
"- WebGL games do not count. It will still be free, even if you make millions with it"
I'm reading and watching a bunch of sources stating that WebGL games will be counted per page runtime as a separate install. (ex. [Youtube]). If you have something from Unity saying they're not going to charge anything for WebGL, please post it.