Well yes it's about the money (this is Disney after all) but I think the biggest reason for the charge is the massive increase in the quantity of product that people are having shipping to them, which is I suspect due in large part to the prevalence of information, tips and suggestions passed round on the internet (including sites like this one of course). And with airlines charging more for bringing stuff along as baggage, and Disney charging ever more for something as simple as a bottle of water, it will probably only get worse.
Ten years ago there would be a few guest items a day delivered to the resort, and this would be handled by front desk staff as needed. Now though, there is a constant flow of delivery people with boxes stacked to the ceiling throughout the day. POR has had to allocate a complete extra room (which used to be office space) solely for package storage, and there is now a dedicated staff member to handle everything.
Andre
