Samsung starts mass producing PM9E1 Gen 5M.2 drive with speeds up to 14.5 GB/s

4TB seems like the upper end for most normal consumers, I would hazard. We had 1-2TB HDDs a decade ago, and there's been little reason to go higher in the consumer space. Arguably SSDs only now getting cheap enough at those capacities might have limited it, but even so I think we're running out of things that consume that much space.

Video and pictures are the main culprit (even in games), but 4k is likely to be the upper end of consumer usage for the forseeable future, photos have been 20-40MP for a decade, and perceivable quality benefits from going higher are fairly minimal. We can always use more space, but from a practical perspective there's not the same explosion in space required from everything else scaling to use it, I'd say.

The question is if consumers are willing to pay the prices of the larger SSDs. I consider myself a pro-sumer and have not needed that much fast SSD myself.

SSDs still degrade, though - Optane was mooted for something like this, but still ended up being too expensive and not good enough at either (unprofitable) in the end.

Pushing 10GB/s on an SSD with 1000TBW write endurance would kill it in ~ 100000s, or a little over a day of continuous usage - and I'd expect a GPU probably would come kind of close.