I hope nobody will be mislead of the reasons google released AMP and AMP for email. It have nothing to do with performance(for AMP) or interactivity(amp4email) and more with establishing a vendor wallgarden.
The standard is "open like in openxml" - there's a technical commitee, but your input will not be heard.
When have your web people ever listened to input? Not Web Audio, not 'autoplay' banning, not AMP, not NPAPI, that's for sure. I was on the Chrome team and your leadership still told me to pound sand. Your leadership deserve nothing but contempt.
It'll be heard, but no one will care. Everyone who disagrees with their direction just gets ignored, because they know you're powerless to do anything to them.
The standard is "open like in openxml" - there's a technical commitee, but your input will not be heard.