For all those saying they can't buy GPU unless GPU goes back to MSRP you might have to wait longer to see this happen, remember that crypto of 2021 isn't like crypto of 2017 there is now better awareness on crypto and people now prefers crypto more than even stock investments, the longer you wait the more regrets you will feel.
The Bigger reason could be the effects of microchip shortages could go all the way to 2022/23. That coupled with the fact that more people are streaming into the crypto space after a temporary economic reset due to the COVID-19 pandemic should never be under looked at.That and the planned move to PoS, I wouldn't buy any GPU for mining right now 
Who told you GPUs mine only ETH? 