I think this is a great argument for web apps. It only persuades me to focus on web apps for certain categories of software, though. For things like high-end games and video or audio applications, I think desktop will continue to dominate... at least until the web and desktop meld. At some point I'd love to see the distinction go away. That's probably a long way off, since it would mean Apple and Microsoft and the FOSS world agreeing on a standard. Hmm... this comment gives me lots of ideas...