The problem is that the higher end GPUs are actually the same chip as the lower end GPUs. The lower end GPUs are where the manufacturing process had an error and thus they fuse off a core. All that to say that they cant manufacture a high end GPU without also manufacturing a low end one (or multiple depending on the manufacturing error rate). So, if they cant sell the low end one, it may not make sense to sell the high end one even if there is a buyer.
>The problem is that the higher end GPUs are actually the same chip as the lower end GPUs.
Don't know where you got that info but that's definitely false.
If you look at Nvidia's lineup, each GPU has a die that's unique to that product in both size and markings. Sure, there have been/are a few products that make use of the same die but with defects depending on yelds, but those are usually in the same performance class (1070, 1070TI and 1080 had the same die), and not the case you're talking about of entry level GPUs being high end GPUs dies with defects fused off. That's never the case. An RTX 3050 die is a completely different part than a 3080/3090 die.
I think it applies for the datacenter/gaming distinction, where the chip of the A40 (ga102) is supposedly the same as the RTX3090 (Ti?) and they play on frequency, memory sizes and other differentiators? And on the license of course...
Yes, though also only to a point. You still see multiple dies in a product generation for CPUs, but you do get binning into multiple SKUs for each of those dies.