And HTTP has solved this with a hodgepodge of solutions like HSTS + preloading for producers and HTTPs everywhere/new browser settings for users but it has take

And HTTP has solved this with a hodgepodge of solutions like HSTS + preloading for producers and HTTPs everywhere/new browser settings for users but it has taken years. I think email could do this, but it require some dominant players (probably Google + Microsoft as providers for home + business users, or maybe Google/Apple/MS as dominant client producers) to participate actively.