Why is this worth paying a premium for, though? Maybe a SQL SSD could get some adoption, but a simple KV store? How would that ever be a bottleneck (they are relatively easy to make blazing fast, unlike SQL) in your application? How many people/corporations actually want something like this?
> How would that ever be a bottleneck
Disk I/O is always the bottleneck.
Disk IO is far from the only bottleneck, or necessarily even the most common one.
Source: My day job has been as a DBA for ~15 years.