Rich Internet Applications can provide a much better user experience than most of the web applications today can. As people all over the world use the web to perform more complicated tasks, that user experience is going to become more important.
The Universal Desktop
The technology and business implications of the next generation of software, rich Internet applications.
Operating systems will eventually become as unimportant as internet service providers. Rich Internet Applications will mature to the point that they can provide everything an OS does currently.