While I agree that PC gaming won't die I disagree with the reasons you listed for it. Your argument boils down to controls.
Well next generation when all consoles have precise motion control technology and IR pointers (or some new control method we have yet to see) I see the RTS finally moving to consoles as the inherent controller limitations will no longer be there.
As for mmo's, if MS and Sony start bundling keyboards and mice or something akin to that with their next gen consoles mmo's will also make the jump to consoles. Seeing as how their trying to make consoles multimedia hubs a k&m would go a long way to establishing consoles as the internet hub device in the living room.
I see PC gaming existing in the future as the place where independent developers and individuals making low budget unique games go. I feel as though the big budget games will move almost exclusively over to consoles.
The definitive evidence that video games turn people into mass murderers
