If your application is designed properly, you don't need admin rights to install - proper Windows installers are supposed to support a "This User Only" install method which shouldn't require admin rights.
True - and Chrome (the full install) already does this - it installs everything into your C:\Documents and Settings\<username>\Local Settings\Application Data\Google\Chrome folder.
I think the main issue isn't this, it's that many of the corporate desktops that are still running older IE versions are no-installing-anything-at-all-locked-down.
I'm wondering if there's a population of users that have computers that are not that locked down, but don't have the savvy to install a browser. (My father's workplace gives him standard-User level access, but he's still been able to install Firefox.)
Additionally, this is probably wishful thinking, but I wonder if there's any chance IT departments would actually be somewhat friendly to this. Theoretically it shouldn't add much (if any) support load, since websites have to opt-in to Google Chrome Frame. An IT department could install it, still have all their internal apps run fine on IE and their users can have a better experience on the web without having to know or care about it.
(Of course, that assumes IT departments would actually want to give their users a better web experience to begin with...)
