I know it's off topic but that typical "Back in my day we never had any of this" stuff is absolute drivel. A little fact for you: Working class families in the 70s had more disposable income than those today. Growing up in the 70's you knew you could eventually work your way up to owning a house. Growing up in the recession and austerity of today, and there's a 1 in 5 chance your parents can't afford to put food on the table. The idea of someone in their early 20's owning their own home is little more than a pipe dream in today's world for most people, and if having chickens to source your own eggs is supposed to be some hardship of long gone times, then I'm guessing you've never looked in the gardens of many modern council estates. It's hardly uncommon for people in the inner city to have their own chickens(The eggs are far bigger than supermarket ones too!).
The fact is, a portion of society has always had disposable income to blow on stupid things, and that portion of society is smaller today than it was throughout pretty much all of the last half century of Britain's history, with people in lower wealth classes now worse off than ever. In the area I live, the life expectancy has now long been below that of the Gaza strip, and we're talking inner city Greater Manchester.
The real reason the RTX Titan is £2400: It's not got the enterprise appeal of the full DP, HBM2 enabled £3000 Titan V that came before it. It's got twice the VRAM of the Titan Xp and 3 times the area, I don't think 2 times the cost of its launch price is unexpected. Plus, the pound has lost a lot of its value recently, the UK's possibly on the verge of losing direct trading access to its largest trading partner while the US is trying to start a trade war with China, who in turn is attempting to sue half the DRAM market for their alleged price inflation. Hardly a period where you'd expect price drops.
The idea that 1080p has somehow got more expensive isn't really true(Besides the increased cost of DRAM atm), only the very top end has raised in price really. Today, if you want to play most games at 1080p you can go out and buy an APU which does the job roughly as well as an Xbone. You really don't need a 1060 level card for 1080p gaming unless you're cranking everything to max on the very latest titles. I still play at 1080p just fine on a 6 year old mid range card and I've still never reached a game I couldn't play at 60 besides early access/beta titles. I have friends who use GTX1050's and RX460's just as well in similar titles.
This is a halo card, a premium product which a premium price tag. This kind of mark up is one we've seen for decades in other markets.
I don't mean to start arguments, but the people buying these arn't impulsive millennials. It's much more likely to be 40yo bankers or something on five or six figures(Even £10k is above the average salary for someone in their early 20's in modern Britain, and that £10k isn't worth nearly as much as it was a few years ago) who would happily splash out orders of magnitude more on a flashy car to nurse their ego/epeen.