To me AMP was just Google trying to turn the web itself in its own walled garden (after many failed social media attempts).

And, as I read in the article, it looks like behind this move there is some current "Antitrust Pressure" plus publishers quite pissed off about losing both control and revenue themselves (as much as 39% less conversions, they says.).

Clearly AMP was way more in Google master plans than a poor web performance palliative.

[Edit]

This was the article linked to this story when I commented (now changed to some Google Dev docs):

https://themarkup.org/google-the-giant/2020/11/19/as-antitru...