Secondly, there are two sides to this equation. The advertisers aren't paying for ads as charity to Google. They want the billions of views that YouTube gets every day. While I don't know the exact statistics, YouTube definitely seems to be growing in influence where people who are popular on the platform are legitimate celebrities. Advertisers would be foolish to not try to get in on some of the publicity. Now I'm a bit conspiracy theory-ish on this whole thing. I really think that between the advertisers and traditional media there wasn't necessarily a concerted effort where both of them planned to do something together, they were just both acting in their self interest. So when traditional media outlets started publishing the nature of the videos that some ads would play next to, the advertisers thought "Well, this is a great opportunity to strong arm them for some cheaper ads." Meanwhile the traditional media was simply attacking a competitor. It seems to me like there were also some useful idiots at YouTube who saw the so-called terrible things that ads were next to and over corrected. Instead of saying "Okay, well, good luck reaching how many people we do." to advertisers, they rolled over and capitulated. When in my opinion, they really didn't need to. Then again, they know more about the business than I do.
But really pulling ads from too many videos hurts the business too, if ads aren't playing on a video, they are hosting that video for free. It makes absolutely no sense. There is also no evidence of any kind of long term association between advertisements and content. You don't see a coke ad before an ISIS beheading video and think "Huh, Coke endorses ISIS".
In fact, in each of the filings for 2016 & 2017 the revenue they report is an amalgamation of products that consist of search, ads, commerce, maps, youtube, google cloud, android, chrome, and google play[1][2].
[1] => https://abc.xyz/investor/pdf/20170331_alphabet_10Q.pdf pg 30
[2] => https://abc.xyz/investor/pdf/20160331_alphabet_10Q.pdf pg 28
Okay, there was no second-of-all...
Ad quality I am getting (long cheap ads on companies unlikely to be rich) confirm that.