I firmly believe that this is because the way we use computers and cellphones and also the way the ads are used, I still watch commercials in TV without a problem, but there is commercial max 20 to 20 minutes (I'm looking bad to you MLB) and I also not so active choosing what to watch so I'm more relaxed. On youtube, If you watch sometimes 4-5 minutes video you get 20 seconds ads, in 10 minutes you have more cause they put ads in between.
Another factor is the quality of the ads, the number of right wing political ads, dumb ads or ads from companies that I hate from my soul is immense, In TV I usually find ads creative and sometimes I like to watch (yeah, I said that) when is not too spammed, just for the art lol.