ChromeOS and recent acquisition of Palm will have a big impact on the web app ecosystem. Things like jQtouch ( checkout how our HTLM/jQtouch app looks on iPhone and Andorid HTC Desire http://blog.smartupz.com/2010/05/htc-desire-and-iphone-smart... ) will only speed up the process of turning web apps/web sites into fully touch enabled apps.
I don't want to brag or anything but our app was designed to be touch friendly (the UI has big buttons etc.) and we made this decision before the iPad was announced :)
http://blog.smartupz.com/2009/12/islate-aka-apple-itablet-my...