I think the necessary reworking is going to happen, but it will take a few cycles through the "Wheel of Reincarnation" to make it fully realized - with the rend

I think the necessary reworking is going to happen, but it will take a few cycles through the "Wheel of Reincarnation" to make it fully realized - with the rendering example, we now have Canvas and WebGL; instead of relying on the browser, you can create something completely customized, with the downside being that many of the supporting features of the document-renderer paradigm are lost. But it's the right technology for certain kinds of applications, and others can be rebuilt on top of that, and eventually you'll get frameworks, and so on. At each step, not everyone will be 100% happy with how things are organized, but enough of it will work that it expands the frontier of what kinds of software can be built on the web. We've been through this before - the web has worked because its paradigms keep getting stretched beyond expectations.