The RAM to go in my own battlestation* cost more than that. I find, even at about five grand all told (so far+), it's still cheaper (and more achievable) than piloting any of these bad boys in the real world. Let along things that actually leave the ground.
The Xbox and Playstation compatibility is probably more to do with standards that any actual work that went into making it so.
* Not my actual battlestation, but a pretty fair example of what I'm talking about.
* I live in a country where we pay about twice as much for hardware as in the US, too, which doesn't help.