> They slowed the non-AMP ads because they didn't want loading them to interfere with the content the user was interested in reading.
This is what Google may have told the public, and obviously would like you to believe. However, internal Google emails demonstrate very differently: AMP was designed to increase Google's ad revenue.
Same source:
"Google ad server employees met with AMP employees to strategize about using AMP to impede header bidding, and how much pressure publishers and advertisers would tolerate."