What AMP could have been, which in my mind would have been a lot better, is some type of open standard that Google offers free hosting for, but does not require

What AMP could have been, which in my mind would have been a lot better, is some type of open standard that Google offers free hosting for, but does not require Google to use. The m.foo.com usage has been around for ages in Internet time, it could do with some standardization and tooling to ensure it gives the quickest page loads possible.