Yes, but have you actually looked at the lineup for Valve's Linux? Tell me, would you like to play any of those games? I see mostly indie titles, which isn't a bad thing, but its not going to make me switch to Linux.
I may not know much about Linux, but you clearly have no idea about PC.
Day Z, every flight simulator ever made, Star Craft 2, World of Warcraft, Planetside 2, Mount and Blade, X3, etc.etc.etc.etc.etc.etc.
Are all extremely successful PC only titles. None of which work on Linux, or consoles.
My point is, PC gaming is a rather huge audience in comparison to Linux. Does it dwarf console gaming? No, but Elite will make a substantial amount of money before it moves to consoles. The same can't be said if they had done a Linux only release. Based on a Valve user survey a whopping 1.51% out of 40 million users use some form of Linux. (Well, all those who participated in the survey.)
40 million people around the world use Valve's Steam, which is a PC GAMING program.
No offence, but people DO use Pc's for gaming. So I have to disagree with you on that statement.
My entire point through all of this, is that Linux is not a gaming platform. It may be one day, but right now? Nope. I do hope Elite gets released on as many platforms as humanly possible however. It really deserves a place at the absolute top of the gaming pyramid.