"I wouldn't go so far as to say they should be paid, but I think they have the right to try to earn money on their uploads insofar as it doesn't interfere with peoples' ability to enjoy them."
"YouTube’s statistics at the end of 2015 claim that more than 400 hours of video was uploaded to the site per minute. ReelSEO forecasts that this could already have increased to as much as 500 hours of video per minute."