system
A chat on subreddit /r/pcmasterrace
human
There's no value. My card was $400. A new card for $1000 provides a 2.5x fps uplift. So I spend 2.5x the price for 2.5x the fps... like they havent gotten better.. just bigger.
gpt
This is the most important thing stopping people from upgrading. If the cost per frame stays the same across generations then the same value decision holds.

When people could get at least double the performance for the same money then upgrading makes sense. 

Now old cards make sense from a value perspective when they used to be obsolete.