It's more likely because the buyers have been persuaded by the marketing and attempts at deception. When 10k MLC (2-bit cells) came out, offering only twice the capacity of SLC for 1/10th the endurance of the 100k SLC that was the norm at the time, they already had to keep SLC prices artifically high (>2x) to attempt to force people to MLC, and I remember the beginning of efforts to hide the poor endurance. Old NAND datasheets proudly proclaimed their 100k or even 10k cycle endurance. Now it's basically impossible to find a TLC or QLC NAND datasheet that isn't behind an NDA or the rare few that get leaked, and even those which you can find, are extremely vague about endurance. Some parts will let you choose between SLC/MLC/TLC mode for each block, and some SSDs use this for some stupid "cache" feature, but the behaviour of that is not easily configurable --- i.e. without hacking the firmware.
Many PC enthusiasts also want reliability.
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