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Not exactly. The clear lack of effort that went into researching this topic also doesn't help.
Let me make this clear, There's no way this could possibly be an economically feasible strategy for Valve.
So why is Valve shelling out valuable R&D dollars to make a game for a clearly unpopular peripheral? To help the industry. Don't think of it as a game you have to get, but more like Wii Sports or whatever's on the Kinect. Valve is helping motion control peripherals get recognition in an industry where any other developer would ignore them and go for the Wii or the Move. There's no way this is economically advisable. It just seems like a nice thing to do for the PC industry.
If a big name like Valve is willing to spend money to publicize a motion control peripheral in an industry where all 3 consoles have a more popular version, they're going to convince other developers to consider this whole PC peripheral thing, perhaps alongside the Wii or the Kinect or the Move.
IMO I think it's pretty nice of Valve to lend this help to the often-overlooked peripherals industry. The Hydra is a beautiful piece of engineering that uses magnets instead of bluetooth or infrared, and, for once, gives you a motion controller with *gasp* DUAL ANALOGS! Why didn't you think of this, Nintendo? Sony? Anyone?