Google Analytics is easily blocked while still having access to the content. Loading the full content from their AMP servers is an all-or-nothing scenario. It effectively moves Google from being a 3rd party to a 1st party and the content provider becomes the 3rd party instead
Nothing, OP is ignorant. Google does AMP to make webpages faster cause they make money from people clicking on links.
Google lock in, like Microsoft's MSN idea in 1995... Google wants you to never leave their servers, so they can track much more and much easier. Just bad for a free and open web.