Comment by CharlesW

> From there, the developer can choose whatever model he wants to display a "page", no longer be limited to the Document Object Model.

How are apps like AutoCAD Web, Photopea, Figma, Google Docs, Google Earth Web, and Flutter for Web apps (CanvasKit) different than what you're asking for? AFAIK developers aren't forced to use the DOM for applications where it's not the best choice.