That's incorrect actually: Pascal isn't tweaked Maxwell (please do correct me with a trustworthy link if I'm wrong (eg no Wikipedia dung he he)). And Pascal existed for a very long time - you can look up old slides. At first the order was: Maxwell - Volta - Pascal. The latter two got reversed right before the former came out.
On a side note; throughout the years I see many mentioning the high prices by Nvidia (and they are). I'd like to think that it's because they have the better product and thus can ask what they want (leaving fair out of the equation; its a money making company, not a charity to please the common mab). More interestingly is that I'm pretty sure that AMD would do the same were the roles reversed, if only to cover their losses
I also remember seeing Pascal on an early roadmap leak. I kind of adopted the whole 'Pascal was never planned' thing that I hear on this site because so many were so confident about it. But I remember seeing it in an early leak.
Regarding your second point, I don't know if I agree. A product does not
need to cost so much. If the product or service does cost so much, in my opinion it should be because the manufacturer/seller believes wholeheartedly that what they're offering is truly special and should only be available to the elite who see the greatness of what they're doing and are willing to set aside a good chunk of change for it.
I'm a musician and I seen it all the time with guitar manufacturers. Some guy in Germany deliberately charges twice his competitors because he only wants to make 15 guitars per year and only wants to sell to the few who cherish his work deeply. He doesn't care about the bottom line or marketing or mass appeal; he believes his product or service is prestigious and deserves a hefty premium, despite being equal to his significantly cheaper competitors. But his competitors produce 50 guitars per year and can get away with charging less without devaluing their business. That's a distinction I believe in.
The same could be applied to fine dining. A Michelin 2-star fine dining restaurant might upcharge their customers 20% and have a three-year waiting list, while their no-Michelin-star competing restaurant offers an equal dining experience with only a six-month waiting list. Why? Because they thoroughly believe that what they're doing is special and deserves to be recognised in a very specific way by a very specific clientele. Snobbery, in other words.
But that's not necessarily Nvidia. Nvidia seem to be charging so much both because they can (no competition) and because they are confident in their products. The 1080 is great, but it's not a revolution. They don't appear to have higher overheads and the chips shouldn't be that much to produce, but they have no current competitor and they like their product so they'll sell them at a premium. The problem, people feed into this; they continue to support such arrogance despite being intellectual enthusiasts.
Apple is in a similar situation, but far worse. They charge a premium almost solely because of mindshare. Some of their products were in the past phenomenal, but now they have so much competition that they're not the best any more. Still they remain ever popular, betraying their exclusivity pricing structure. It's why people associate hipsters with Apple. Hipsters are comically known for being purposefully different and going against the grain, but they still choose to buy from Apple, a company based around forgotten greatness and marketing. Beats by Dre, Alienware, all mediocre products sold as exorbitant prices to those that are deluded enough to feed into the hype. Nvidia aren't that bad, but they could theoretically become that bad if people don't support AMD with their wallets.