Personally I think the way web browsers work is kind of insane from a user perspective. "The Web" is obsessed with technical expertise and custom code. An application like MS PowerPoint (pick any other design tool you prefer) is designed for users to create multi-layered media content and display it anywhere, without requiring a college degree or months/years of experience to make something. I don't think people who actively work on the web have considered how over-complicated it all is. For an industry that talks obsessively about "innovation" and "disruption", it can't seem to conceive of a post-web-browser world.