Here's the problem though; the move is a single platform hardware. It's designed by Sony for the PS3. What about the Xbox users? What about the PC users? Sure Xbox has Kinect, but Kinect is essentially an improved PlayStation Eyetoy. It's a camera that tracks your body so that no controller is needed. So what if someone needs to access their Pipboy? And what about those PC users who don't have any type of controller like the PlayStation Move and nowhere near a webcam that is designed for the same intentions as Kinect?
In short, the Sony Move is cool, yes. And for some games like SOCOM 4, it'll allow the player to feel as if they are truly holding a gun and not just using the controller (at least that's what Sony is aiming for), but it's useless for a multiplatform game like Fallout: New Vegas. Do you realize how much time would have to be put in to make different versions of the game that's compatible with or without Move, with or without Kinect, and with or without any other motion control items that may come out? A lot of time and resource that could be for better stuff, or a quicker release date.
Let's leave the Move to Sony exclusive games so that they can fully support the Move and not waste time for other systems.
Also, the Move was JUST announced this year; New Vegas has been in production for two years. How on Earth would it manage the Oct. 19th release date AND have Move support?
There are actually several motion control products on the market for PC, they've existed long before this current motion control fad (And have actually had higher resolutions than kinect for a long time (but then, who hasn't?)). All they are are webcams with some fancy software, in effect.
Regardless, that's not how software development works, the game would get various details like pointing direction and rotating from an abstracted function, which could come from a mouse, controller, or motion control device of your choice, whether it be the sony Wiimote, the 360 eye, a PC webcam, or the nintendo remote control. But let's not go there, please? People have modded HL2 to accept input from almost anything that can send input, we still use a (mouse and keyboard | controller), and for a very good reason - abstraction. Using motion control devices effectively limits you to motions the human body can reasonably make in a small space. Everything else has to be done by abstracted gestures that simply don't fit along with fully motion controlled actions. No, much better to keep everything abstract, performing complex actions with a press of a button is much less immersion breaking than having to fire your gun manually, but automatically climbing up a ledge.