Which is much higher than ad revenue through Google. I know it because I have a friend with a YouTube channel +5mln and he has external team handling these issues. He told me revenue from sponsorships is 4 times more from what he makes from Google and his viewers are mostly from US.

However his sponsorships are really well placed and match the content. Also listening t these ads is not as painful as Linux Tech Tips, so probably he makes more from sponsorships than average.

Yes, so there are YouTube ads and sponsorship segments and people still watch it