The original TITAN was priced that high in part because it was a middle ground between gaming and pro graphics that needed better DP.
If Fury X has better DP than 980 Ti, that may justify a price premium and milk the "I need better DP but won't pay for a Tesla/FirePro" crowd.
Tahiti offered full 1/3 DP but that never made it worth even as much as the GK104, never mind a premium. The whole DP argument was nothing more than forum members claiming it made the card worth more. Just like the 12GB now. nVidia never promoted Titan as any kind of "prosumer" card. Simply a gaming card, which is all it was.
While I'm sure there were a few people who took advantage of Titan's DP performance, the vast majority didn't. The vast majority won't ever need 12GB VRAM either. They'll just claim that's why there's a premium.
Then there's the case that the Geforce drivers aren't optimized or certified for pro apps anyway. I use Cinema 4D for modeling, but any issues with consumer cards won't be supported by either side. Although I did get one issue dealt with by AMD (soft shadows in C4D caused the program to crash) I told AMD and got the standard canned response of not guaranteeing Radeon operation with pro apps (They did respond though contrary to what others claim,). I responded that I realize that but they might find it was a common OpenGL issue if they looked at it. They agreed and when they did they found a fix (It took 2 driver updates). I was lucky.
Bottom line is people don't mind nVidia being a terrible value. AMD's customers are different. If AMD abandons the value proposition they'll alienate their customer base. The 970 and 980 ti offering good value for performance I think is directed at AMD's customers. It's too bad for them they screwed the pooch so bad with the 970 specs and memory operations. Like their other gafs though, people will justify it. :shrug: