Unity3d Web player installation User based installation on Mac OS X

Hello!

It seems that it is not possible for a Mac OS X client to install the web player as a user based installation, in opposition to a root based installation. There is an equivalent subfolder to the root installation path /Library/Internet Plug-Ins (eww I hate filenames with spaces) in /Users/XYZ home directories so I guess that user based installation should be trivial to do.

Is there any reasons it is not available as an installation option? Especially since the windows web player installers enables to do such a user based installation....

Thank you!

-- David St-Hilaire