Earlier quoted context omitted.
If a huge proportion of the internet economy stopped existing, the only real losers would be the big ad firms like google. I think we can all happily live without 99% of youtube's shit
If you blocked 99% of ads though, youtube couldn't exist. It would have to become pay to watch. Don't be stupid.
If we had real, viable micropayment services, where you could click a mouse button and spend $0.002 to read an in-depth news article or $0.008 to watch a YouTube video (these amounts are probably more than the content owners are getting per-impression from the ad networks), I think ads would mostly die out and these sites would be self-supporting.