As someone who has worked extensively within Gnome's HIG, Apple's HIG, and with frameworks such as QT/GTK+/Cocoa, I fully agree with your and byuu's comments.

I was merely pointing out that the market seems to be pretty content with web apps as a solution to "write once, run anywhere, look nice" (even if here, the "look nice" doesn't include "look native" - but those are 2 different things)