That's not entirely true. mod_pagespeed (https://modpagespeed.com/ https://modpagespeed.com/), a plugin from Google for Apache and Nginx, does a whole bunch of

That's not entirely true. mod_pagespeed (https://modpagespeed.com/ https://modpagespeed.com/), a plugin from Google for Apache and Nginx, does a whole bunch of the stuff google is offering through AMP, and it's theoretically capable of doing almost everything there. It optimises content on the fly, and stores cached versions of them on the drive for later hosting, etc. etc. I think possibly the only thing that it can't offer that way is hosting the content through the Google CDN.