As I posted in the news? thread about this...
• Gamers are complaining about not being able to get a graphics card, often blaming miners
• Nvidia ships cards en masse directly to miners
• 3060 has similar mining performance to the 3060ti and even the 3070 (or it would if not artificially gimped)
What to do? Some genius came up with the idea to castrate the 3060's mining performance. They get to make it look like they care about gamers by limiting the mining performance midrange card, which should perform about the same as more expensive models. The result? Miners are forced to buy more expensive hardware (or come up with a way to bypass the limit somehow) while most gamers will happily accept the table scraps. It's a win-win for Nvidia.
I don't see this affecting used sales too much. For example, a gamer typically keeps his graphics card for at least a few years. Let's use the GTX1080 as an example. For a gamer upgrading from a GTX1080, they might sell it off and upgrade to something better. A gamer with even older hardware looking for a cheap deal might buy that used GTX1080. A miner isn't going to care about that GTX1080 if they can help it. It's too old, too slow, and performance per watt is too low to be attractive, unless they're just looking to fill slots and it's all they can get. Similarly, if profitability goes to shit and availability is still bad, or hell, even if it's not bad, a miner can easily sell his RTX3080s. Gamers will buy them, and other miners might even buy them. The only thing this does is discourage miners from buying up RTX3060s, and miners gonna mine so they'll have to pay for the more expensive model that isn't gimped. Or they'll buy the 3060s anyway and bypass the limit. Nvidia won't care much either way, they still made their sales, whether they to go miners or gamers.