The problem is, we had “almost affordable” 8 TB SSDs back in 2020. TechPowerUP review for Samsung 870 QVO has most damning title we have ever seen in this site:
Samsung 870 QVO 1 TB review: Terrible, Do Not Buy
And it’s a fair assessment, drive that falls to 80 MB/s after the cache is filled is terrible. But three years later nobody else challenged this drive - because SATA drives are out of fashion now, and you can’t cram 8 TB cheaply in M.2. And it doesn’t seem it’s going to improve, even though some 2TB M.2 drives have fallen to below $100 mark…