Enterprise SSDs usually don't use SLC caching—especially not to the extent that consumer drives do—so their sequential write speed doesn't drop much for really large/sustained writes, and doesn't have a short unsustainable burst of accepting writes quickly into a cache.

In high end enterprise storage, the drive do a form of caching (SLC to TLC in background by the drive) and it also does compression and encryption. Look at the Flashcore FCM4 used in IBM Flashsystem. https://www.redbooks.ibm.com/redpapers/pdfs/redp5725.pdf (no affiliation except that work recently aquire an IBM SAN and I am satisfied by this storage unit, it's not like a Purestorage SAN but it's fast enough)

IBM's drives are exactly why I said "usually don't" rather than "never". SLC caching is still not normal for enterprise drives, whereas it is now universal for consumer SSDs.

I'm working mostly with enterprise drives and not consumer. These drives can write continuously at 1 to 4 GB/s depending on the specific type (mixed use vs read intensive vs very low writes).