Disney is not outsourcing the whole department, only about 1/3 of it.
It makes business sense on many levels.
At the hotels thatt I work with, we have our own IT department, and they manage the company systems, but most hardware is covered by an IBM service contract. We have 24/7 service, which is something we could not provide without increasing the size of our own department. Also, we do not have to order parts, or stock parts, as IBM does this. In almost every instance, they can fix the machine much faster that we would be able to, unless we increased our costs by quite a bit.
Also, ERMCO manages running all of our cables. If they did not, doing so would either tie up our own department on the few occasions that we need new runs pulled, or we would have to hire bodies to do this, but what would they do the rest of the time?
Sprint manages our PBX system, yeah, we have our own telephone techs, but to manage a switch for a resort with 2850 extensions......it is easier and more cost efficient to have it under a contract.