That's a very simple way of looking at it. It's not just about power bills. What do you think it's like having three or four Titans in a loop in Summer? A full fat GK110 can consume up to 400w on a reference board each.
That energy isn't just going into your bills it's dispersing into your room. 980s consume even once overclocked little more than 200w. So they might still not be 'worth' it, but those same people probably aren't power users. H100 cooler and a single 290p type deal.
It does all this whilst being on the same process, and faster than Kepler, but it's not high end just because Dave and Dell Boy know there's something else planned. If you took that outlook every time a company that uses fabrications said anything what so ever, you'd spend your whole life waiting...like some chump
The most laughable part of if all though is guaranteed, a large majority of these same people won't be willing to pay the prices for what Nvidia have shelved. So when push comes to shove I'm not sure who's the bigger idiot, people who've bought GM204, or those so desperately clinging on to the unknown. I'll get what ever comes just because I don't mind, it's something I do because I enjoy it. I don't try to tell Nvidia what their products are because I think I know better than they do, regardless of what Rajif from India leaked from a shipping manifest.