In the article I mentioned that Dropbox would have to source some costs in infrastructure. In my opinion, Dropbox with your ISP would be more beneficial for mul

In the article I mentioned that Dropbox would have to source some costs in infrastructure. In my opinion, Dropbox with your ISP would be more beneficial for multiple accounts. Dropbox could have a control panel for ISPs to link their customers to which would allow a MobileMe-esc division of the available space. The ISP could provide Dropbox with the assigned IP address (hashed, of course) so decisions regarding the use could be handled appropriately. Outside of your ISP connection, you'd have the same access with the same experience.