Trucks generally are often wasted (from a green perspective) because people like them not for their intended design utility.
Same for single passenger SUV usage etc...
(I drive an SUV - not trolling those that do)
The analogy is improved like this: Ford announces in advance that their upcoming truck requires a certain usage, and if you want whatever special commercial usage, you need to pay a premium. You might be grumpy about the upcharge, but this is a very different situation from them changing the terms of the deal after the sale.
Implicit somewhere is the economics and supply is that nvidia has made these ans knows people use them for work. What would be our collective thinking if they made the gpu not work for non games?
This would probably increase supply further for the gamers. Commercial users should and would pay more since they are literally profiting from their use.
Miners would buy the edition now meant for them.
John Deere has entered the chat.
We often have used GPU's for around the price range you're looking for. They won't be fantastic, but probably an upgrade for a 9 year old machine.
Edit: I should also add, a lot of the really small scale shops also don't list 100% of their inventory online, with the benefit that it doesn't get scalped up like everything else.
Modern computers have allowed these 'forever existing' technologies to scale to our population growth. Try building freeways without modern computers, or performing modern medical interventions without them.
Probably the most critical usage of GPUs is scientific simulations for biology/medicine, climate, space, etc.