Sorry, but that is hubris, plain and simple. I know plenty of people who read the original post on the AVC blog. Most of us didn't buy it then, and still don't.
The fact is that today there is very little you can't do in a browser app and can do to a useful extent in a mobile app. Mobile browsers are driving support for HTML5 features and Javascript tools supporting useful features like geolocation, and they do it well enough to meet a lot of needs now.
If I write a browser app then I have a few portability/degradation issues to deal with, but I'm only maintaining one code base so I can spend all my development time getting those things right. If I write mobile apps, I need a whole new app on each platform I want to support, plus I still need a browser app or a native executable for each major platform if I want to support customers on desktops/laptops as well.
If I write a browser app then I can charge however I like using a variety of services, and aside from taxes and overheads for collecting payment it's all mine. If I write mobile apps, I'm losing an absurd proportion of revenues to the likes of Apple when people buy my app, and I have to comply with all kinds of onerous rules about charging later too.
If I write a browser app then I can distribute it under my control. If I write mobile apps, then I have app stores and their infamous approval processes to get through, and if they decide they don't like me, all my effort was for nothing.
In short, mobile apps suck (from a business or software development perspective). They have exactly one redeeming feature, in that you can still do a few things with them that are harder or impossible with web apps, and even that advantage is reducing almost by the day. Otherwise, for most information consumption or communication software -- which is, let's face it, about 99.99% of what everyone is running on mobile devices anyway -- it's hard to see any reason to invest in mobile apps today.