Are mobile web apps dead?

Like I've said, I was researching webapps as a possible avenue for mobile development. Right now I'm doing native, but I am familiar with web technologies.

What I found mirrors Brian's blog, I don't see how I can compete with native. What was and continues to be surprising to me is the denial that problems exist with mobile webapps and the cocksure attitude that I see pretty much everywhere online (and especially on HN) that webapps can't fail and it's only a matter of time until they obliterate native apps.

I am opting for a hybrid approach in the mean time, with emphasis on native development.