Comment by alex43578
"Lots of users would gladly pay way more than $30/year have an ad-free experience"? Outside of ads embedded in Google Maps, a free and simple install of Ublock Origin essentially eliminates ads in Search, YouTube, etc. I'd expect that just like Facebook, people would be very unwilling to pay for Google to eliminate ads, since right now they aren't even willing to add a browser extension.
Anecdata, but my nontechnical friends have never heard of uBlock origin. They all know about ad-free youtube.