I went to QLC for my NAS last cycle. The $/TB was worse, but not by a huge margin, and the performance is quite a bit better (not that it matters).

I've been wanting to update my (100TB) NAS for over five years, but I haven't yet found anything that I feel is worth upgrading to. One of these with a QSFP56 interface would be nice, but I would need to sell one of my houses to pay for it, so I'll be waiting a little longer...

Sadly none of that enterprise hardware will ever make it to you due to being wastefully shredded

NVME SSDs are consumable items more so than HDDs are.

These drives will arrive in the secondary market to be snapped up by businesses lower in the food chain. By the time you can find them they will be ridden hard and put away wet that you probably wont want them.