Mining (we are taking about big farms with hundreds or more of GPU) wasn't the big problem till very recently. In comparison to what the demand is from gamers the numbers that miners wanted were miniscule - few thousands of cards at most comparing to millions demanded by gamers. Only very recently it became profitable to actually buy anything they can get their hands on, to mine. To the point that a lot of gamers stopped gaming all together just to mine more on their gaming rigs - as greed won with any morality.
But from the day one of release (even before mining was demanding any of the new 3080) there was almost no stock provided in comparison to huge huge demand of gamers. And the demand is still much greater than supply and that won't change till 2022 or even later, most likely. We need new production capacity to catch up and that takes years to build, test and fully enable - it's already on the way, buy ETA is 2022 or later.
As is now, even if mining dies today, it won't change much at all for gamers, demand is still much greater than any supply. And the biggest problem is scalpers - they are very well organised and will buy out anything they can to resell, for as long as it's profitable for them
True, scalpers are the worst in the current state of stock, however scalpers can ONLY profit from items that are very rare. Without this 2nd (or technically 3rd) mining boom, they would have had a MASSIVE challenge acquiring funds to buy ALL the produced stock, AND buyers would know they're much more likely to get a card therefore wouldn't feed the scalper business model into profitability.
Production has actually been confirmed to have been increasing in many instances. Yet these cards aren't ending up in the hands of gamers as they usually would. Just look at reviews and such for 3000 series. Been like what 7 months and there's hardly any, which would tell you:
a) production has massively decreased
or
b) they're simply not ending up in customers/gamers hands.
In my 30 years of buying/selling hardware only 2 times have I seen such a **** storm - both during mining booms. I've not seen anything to convince me that's not coincidence... not even Corona causing higher demand. I once remember the price of RAM doubling in I think around 2012, but that was sorted within 6 months or so. Nvidia have never lowered their prices since the first boom taught them they could sell for 2x the price.
Thousands upon thousands of these cards are going to INDIVIDUAL farms. Manufacturers themselves, are shipping thousands upon thousands of cards to miners OR mining themselves. Perhaps into the MILLIONS, every Tom Dick and Harry are buying to mine. And It's free money - Why wouldn't they?
TLDR - IMO if it weren't for miners, even accounting for higher demand, stock would be relatively hard to get... not damn near impossible.