GPU prices are going to be the least of people's worries over the coming 2 to 3 decades.
Inflation is going to get out of control really badly unless the central banks start to increase interest rates real soon.
The financial problems we face have been brewing for decades. The system should have gone down in 2008 during the so-called 'financial crisis', but instead central banks decided to print print print and slash interest rates. This was never going to end well.
To bad there's no evidence that interest rates have any effect on inflation.