Publishers already host their own AMP content. Google caches that content, but anyone can go to the publisher's URL and get it directly.
Disclaimer: I work for Google and have some involvement with AMP.
Disclaimer: I work for Google and have some involvement with AMP.
The worse case I've seen is a site in which every page crashed Mobile Safari without fail regardless of which version you ask for. It was eventually fixed but I never figured out why. If the sites are just running some script without checking then the admins have failed their line of duty.
I'm just going to file another complaint to the EU Antitrust committee otherwise, as this is a simple and clear violation. (Although I doubt my own complaint would be very relevant — all large publishers already have filed such complaints, and Google will be fined for it).
My pages actually increased their loadtime tenfold when I tried them with AMP — they're tested on a HUAWEI IDEOS X3 on 64kbps GPRS. AMP increases load time to over a minute. (On a modern phone, with a modern connection, my pages are obviously also faster — I'm also testing with a Nexus 5X on 100Mbps 4G)
I have the choice between a massively worse user experience, or worse search ranking. And that's a choice that's just not acceptable to me.