Okay, I am confused now. Did I not say I would buy it if it was Titan XP performance for £500-600? So yeah, if Nvidia bring out a 1080Ti and it is pretty much on par with the Titan XP like 980Ti was with the Titan X at that price, I would buy that. But if Nvidia wait until say after March to do that, I would still wait a couple of months and see what AMD would offer. It is all about price for performance and timing. Just look at people who took advice here to not wait and bought 980Ti at full price with Pascal being imminent and later were very unhappy as for that money they could have had a new tech card that is the 1080.
Your point would be valid to me if Vega came out today and was Titan XP performance. But if roughly 9 months after Titan XP release, charging £1k or even £800? Got to be having a laugh. Lol. As I said, I would just wait a little longer and get a 1170 if that is the case.