"core of each Chromebook is the Google Chrome web browser."
so that negates your comment
"rely on software end-users simply do not know"
Traditional programs are transitioning to the cloud, such as MS Office 365, ideal for browser based computing. Throws water on your assumptions.
"HTML5 and other open standards, web applications "will soon be able to do anything traditional applications can do, and more". This, however, is unlikely to happen since traditional programs are not standing still."