Its not just mining. Theres a massive shortage in silicon thats mostly affecting prices right now. Most of the silicon thats available, has been routed to what has been deemed as essential and its not gaming gpus. It doesnt help that a massive chip manufacturer in China was involved in a pretty big fire, further slowing production.
https://www.nytimes.com/wirecutter/b...ortage-delays/
https://www.bbc.com/news/technology-56486242