Bing's AMP cache doesn't load any resources from Google.
Currently, there are two AMP Cache providers:
* Google AMP Cache
* Bing AMP Cache
AMP is an open ecosystem and the AMP Project actively encourages the development of more AMP Caches. To learn about creating AMP Caches, see the AMP Cache Guidelines.
How do I choose an AMP Cache?
As a publisher, you don't choose an AMP Cache, it's actually the platform that links to your content that chooses the AMP Cache (if any) to use."
The above is from amp.dev, formerly ampproject.org
As the dominant search engine/web portal (excuse me, "platform"), already having the largest web cache and the infrastructure to maintain it, it looks like Google therefore becomes the dominant AMP cache as well.
Dominant AMP cache is a meaningless concept. You as the link aggregator have to have your own AMP cache to implement instant loading.
You lost me there. By "link" you mean URL?
If Google only cares about a faster, more semantic web, then why not just give an even bigger ranking boost to faster, more semantic websites? Where does the need for a new standard come in, other than to gain more control?"
The above is a comment found in the OP.
Is there a requirement that AMP sites host resources with Google?
If there is, then Google has hijacked the purported goal of of promoting websites that consume fewer client resources (and are therefore faster) -- arguably a worthy cause -- in order to promote the use of Google's own web servers,[1] thereby increasing Google's data gathering potential.
If there is no such requirement, then is it practical for any website to host an AMP-compliant site, without using Google web servers?
If not, then AMP sure looks a lot like an effort to get websites to host more resources on Google web servers and help generate more data for Google.
1. When I use the term "web servers" in this comment I mean servers that host any resource, e.g., images, scripts, etc., that is linked to from within a web page (and thus automatically accessed by popular graphical web browsers such as Chrome, Safari, Firefox, Edge, etc.)