We need an HTML lite but AMP doesn't get us anywhere close to it because it's a custom dialect of HTML driven by a bunch of proprietary Javascript. The google search spider enforcing a 'lite' subset would have gotten us closer, if not there entirely. We know they can do it because the spider runs JavaScript, they could examine loaded content and measure time to first content. They don't because it's way more effective to get content providers into a walled garden where they can be monetized.