A lot of the web consists of archives. Files put in places that no one maintains. They just work. There's no one there to do the work that Google wants all sites to do. And some people have large numbers of domains and sub-domains hosted on all kinds of software Google never thought about. Places where the work required to convert wouldn't be justified by the possible benefit. The reason there's so much diversity is that the web is an open thing, it was never owned.

The web is a social agreement not to break things. It's served us for 25 years. I don't want to give it up because a bunch of nerds at Google think they know best.

Google makes a popular browser and is a tech industry leader. They can, they believe, encircle the web, and at first warn users as they access HTTP content. Very likely they will do more, requiring the user to consent to open a page, and then to block the pages outright.

Quite nice and naïve post - http://this.how/googleAndHttp/

While actually whole point it to build up system of total filtering and blocking. Where you'll still have working site, but if powerful guys won't like it will be out of Google and Chrome will be declaring it as malicious and fake news and won't allow to open it.