The fabs did scale down near the beginning of COVID-19 AFAIK when the economy was in a panic and all sorts of manufacturers were canceling orders from people further up the chain - and that does account for some of the shortage we're seeing now (since that production time was resold to other consumers) but it's a much smaller impact than the 30XX line's attractiveness to miners. I don't think there is honestly the capacity to meet these levels of demand right now (as opposed to there being readily available production capacity that's either idle or doing something that could be outbid).
I also don't really see how keeping all of the consumer groups (miners and regular folks) using precisely the same model of card instead of two incredibly unbelieveably similar cards would actually increase demand. If anything there being a card optimized for hashing (i.e. with unnecessary bits stripped off) might lower the cost to produce such a card and allow miners to actually purchase more of the card compared to paying for a nearly top of the line consumer video card.
I don't actually know how much we'll see Nvidia try and scale up (since that extra purchased capacity will be a liability if Eth suddenly tanks) but I think their decision to increase scale will only be minorly impacted by this effort. I will admit there will be some impact since they could refuse to increase the 3070 supply (please correct me if I've got model numbers turned around) without having as dramatic an effect on their customer base - however, that'd honestly just return them to square one where the miners are going to pick up consumer grade 3080s to keep up with mining projections.
I think the important thing here is that nothing is being made impossible - it's being made difficult which should have a corresponding effect on the value of these cards to miners unless they screw it up again in a major way. People trying to absolutely prevent video game piracy have either
1. Screwed it up and allowed a sharpie to defeat their system
2. Bricked a whole bunch of legitimate users' computes and ended up in class actions
The successful approach to prevent piracy is to price things fairly and while making it less convenient to pirate things - honestly a huge driver here in the modern world is content that's enriched by being online, not stupid "You must have an internet connection to play this single player game" but "If you're online you can tap in a friend for help" - that sort of online integration significantly lowers the value for pirates while allowing legitimate users to only see upsides.
I also don't really see how keeping all of the consumer groups (miners and regular folks) using precisely the same model of card instead of two incredibly unbelieveably similar cards would actually increase demand. If anything there being a card optimized for hashing (i.e. with unnecessary bits stripped off) might lower the cost to produce such a card and allow miners to actually purchase more of the card compared to paying for a nearly top of the line consumer video card.
I don't actually know how much we'll see Nvidia try and scale up (since that extra purchased capacity will be a liability if Eth suddenly tanks) but I think their decision to increase scale will only be minorly impacted by this effort. I will admit there will be some impact since they could refuse to increase the 3070 supply (please correct me if I've got model numbers turned around) without having as dramatic an effect on their customer base - however, that'd honestly just return them to square one where the miners are going to pick up consumer grade 3080s to keep up with mining projections.
I think the important thing here is that nothing is being made impossible - it's being made difficult which should have a corresponding effect on the value of these cards to miners unless they screw it up again in a major way. People trying to absolutely prevent video game piracy have either
1. Screwed it up and allowed a sharpie to defeat their system
2. Bricked a whole bunch of legitimate users' computes and ended up in class actions
The successful approach to prevent piracy is to price things fairly and while making it less convenient to pirate things - honestly a huge driver here in the modern world is content that's enriched by being online, not stupid "You must have an internet connection to play this single player game" but "If you're online you can tap in a friend for help" - that sort of online integration significantly lowers the value for pirates while allowing legitimate users to only see upsides.