Earlier quoted context omitted.
Sites that are traditionally called walled gardens (facebook, AOL, compuserve...) often combine four features; (a) all the content is hosted under the walled garden's domain; (b) the walled garden designs key parts of the navigation and layout, understandably acting in their own interests; (c) the walled garden has content policies and declines to host certain content; and (d) users must have accounts and be logged i…
But it doesn't do (a), either. Google hosts a cache of the content, but the original is hosted by the publisher, and Google's cache isn't exclusive. Microsoft, Facebook, and Twitter, IIRC, operate their own caches, and so can anyone else who wants to (and there's a fairly strong incentive too if you host something that functions as a high-volume portal.) AMP makes it harder for real walled gardens to provide an attra…
How do I get my page into the carousel when using a fork of AMP that reduces the JS load?