So? I don't understand your point. The chart shows the inflation-adjusted prices are rather all over the place, presumably due to what competition there was at the time (among other factors). In 2007 a new "Ultra" tier was introduced, pushing the top price up for two years. In 2009-2012 value improved (maybe due to aftermath of recession?), and then a new "Ti" top tier was introduced in 2013, bumping the price up again. Is there any point on that chart where the new flagship was worse value than the previous one in terms of raw performance? I honestly don't remember performance figures that far back but I'm assuming 2007 is the only time this might've happened. Was the 8800 Ultra more than 60% faster than the 7900?The point is the chart, which shows the high-end card pricing (excluding Halo products) for each generation taking into account inflation based on statistics found on CPI-U for the given time period. The most note worthy thing, however, is as mentioned in the article from which the snippet is taken.
When adjusted for inflation the 1080 Ti almost exactly matches the price of the GeForce 2 Ultra from back in 2000.
Also, that chart doesn't actually include the 2080 Ti. That's $1200 - stands out a bit, no? Even if you believe nVidia's assertion that cards will be available for $999 (hint: the cheapest available on OcUK would be the equivalent of $1125 ex VAT), it'd still be the highest on the list.