I think you hit the nail on the head when you said "privatized security model." That's especially effective when you're dealing with national security. It'll be even more effective now that it'll be privatized outside of US jurisdictional effect. But I'm sure some guys in Texas will get rich in the process.
It isn't being privatized outside the US. The stuff that the UAE is looking to buy is currently owned by a British company. Security is handled by ICE, very much a domestic concern.
RE: A Meditation On the Speed Limit