I didn't even know this was a thing, but I definitely felt like Diamond Age just sort of ended mid-sentence. It's got all the elements of a great ending. I suspect it's something in the cadence, like if a symphony just ended with a V-I "BUMP DUMP!" without any sense of "everything is resolving into a tight knot." Instead, he lays out all the thread, everything is there, and there's just not really any way to wrap it up without being trite.
For an author with a similar style who does do endings, I'd say look at Heinlein. But this is all kind of besides the point, because Young Lady's Primer was basically my favorite book at the time I read it, and is still in the top of my personal charts. Sure, it doesn't have an ending or even a coda, but it just doesn't matter, because the mass of thread is beautiful without being tightened or tied off.
For an author with a similar style who does do endings, I'd say look at Heinlein. But this is all kind of besides the point, because Young Lady's Primer was basically my favorite book at the time I read it, and is still in the top of my personal charts. Sure, it doesn't have an ending or even a coda, but it just doesn't matter, because the mass of thread is beautiful without being tightened or tied off.