Chrome OS gets the balance between local and cloud right, with 1 click extension installation/uninstallation, a minimal file system to facilitate downloading/uploading, and a very clean interface. In just a few years, and despite low marketshare, Chrome already sets the pace, as Firefox's new interface and release cycle give witness to. Regular people are actually ahead of the curve: for personal stuff, they already only use web apps. When they can get their work done on the web too, they'll wonder why they'd need anything other than "just a browser".