Ads is 80% of all revenue on your chart (search ads + network ads + youtube ads).
If you want, you can stretch their products to ads, cloud, and play store. But ads are still 80% of the whole pie. More if one accepts that some percentage of youtube subscribers are only paying to get rid of ads.
And I would add that the non-ads businesses listed there are money-losers. Their cloud stuff is still in the red, and things like Android and Chrome and Maps are basically about ensuring that there are places they can put ads.
They're different because the funnels are different. If Bing were to eviscerate Google Search overnight, YouTube and AdSense (other companies showing Google ads on their pages) will still continue to draw in the clicks and the eyeballs.
No. If Bing eviscerated Google Search, then MSFT could profitably serve and sell ads on video content, so MSFT/Bing would immediately want to set up a video site, and lure content creators off YouTube.
If you want, you can stretch their products to ads, cloud, and play store. But ads are still 80% of the whole pie. More if one accepts that some percentage of youtube subscribers are only paying to get rid of ads.