Nvidia, AMD, Intel and others base their production rates on year over year results. They are not going to build new fabrication facilities to fill this temporary boost in sales unless that boost will last several years to recoup costs and return profit.
So if AMD or Nvidia sell 1,000,000 GPUs per year for the last 10 years and they predict that they will sell 1,000,000 GPUs per year for the next 10 years they are not going to spend money to increase production for a one year blip in demand. Especially if you factor in after Covid lockdowns ease there may be a slow down in PC and component sales since so many people bought a PC or component this year.
BUT BUT BUT BUTTTTTTT They made a gazillion vaccines in a short time, why cant they do the same for GPUs? Those vaccines are guaranteed to be purchased by governments as in contracts have been signed stating XYZ government is purchasing 123 amount. And that Covid vaccine is probably going to be in demand for many years to come. Those Pharma companies know their future profits, today.
Now if every government in the world were to sign some guaranteed contracts for 3000 & 6000 series GPUs AMD and Nvidia would ramp up production because the guaranteed money would be there and they too could predict future profits.
My offer still stands. If you want a GPU that bad I will charge a $200 finders fee over all costs and get you a current Gen GPU. They exist and unlike the Covid vaccine anyone can get one.