There's a big difference between web app and web page. Common web app controls (accordion, tab panels etc) allow developers to convey lots more information on s

There's a big difference between web app and web page. Common web app controls (accordion, tab panels etc) allow developers to convey lots more information on screen and well thought out use of AJAX can make a complex application perform more quickly than the static equivalent. As the complexity of web apps increases users will need to get used to the idea that they need to learn how to use each app to get the most out of it which is how it works with desktop apps. Try to compare the UI between desktop apps such as a music editor, 3DSMax and MSWord. Each uses different UI controls (sliders, knobs, text input etc). Each app is complex and has an associated learning curve. If people consider the app useful they will invest the time in learning how to use it. I recently had to learn how to use Aftereffects. The UI and work flow were completely foreign to me - none of my existing knowledge was transferable, but I learned how to use it because I needed the features it provided. Ultimately the market will decide. My guess is that the line between desktop and browser will continue to blur and will one day disappear.