So I guess I can't talk about the DOM; many functions are just an API for it; and canvas is just an API for drawing accelerated by the CPU; so... Javascript is nothing and nothing can be blamed on it?
I would class many of the other things you mention as incremental improvements of the rendering engine as a universal runtime. It's great that it's happening but it's not technically that exciting to me to see reimplementations of 16 year old games since we've had the flash runtime in the interim anyway.
You mean P2P connections? Oh we have that now in Firefox and Chrome. You mean video chats? Oh we have that. You mean thousands of libraries to create and develop videogames for the web? Oh we have that. You mean easily extensible browsers via plugins/extension? Oh we have that. I need you to be very specific about what we are lacking.
But that wasn't my point. My point was that just because the web allows you to do things that were possible on the desktop 10+ years ago doesn't make it interesting to me. And the fact that you can always add specific functionality to the runtime like video conferencing doesn't really address that.
I don't have to wait for browser vendors, I just start coding.