We do. The web was supposed to be a content-delivery mechanism not an application-delivery mechanism. The problem is that it was shoehorned into an application-delivery mechanism, and the lines between content and user interface were blurred so much that it delivers neither particularly well any longer.

This quote from Alan Kay sums up my (and OP's) feelings about the web stack:

> The Internet was done so well that most people think of it as a natural resource like the Pacific Ocean, rather than something that was man-made. When was the last time a technology with a scale like that was so error-free? The Web, in comparison, is a joke. The Web was done by amateurs.