Soundwave on 27 November 2012
I just don't think anyone will have the budget to make games that require complexity (visual or otherwise) that goes beyond the PS4/720 for a long time, which I expect to be about 2TFLOP+ in a closed operating environment (though I suspect 720 will run Windows RT) fine tuned for gaming.
Not for a niche PC market.
Sure you can pluck down $3000 for a custom PC if you want, I just don't think you'll be getting a whole lot of bang for your buck. Maybe a handful of titles will make use of that. As 4K resolution monitors become more common, then sure. You'll probably start to see some seperation.
