I also see no reason(not fully understanding driver matching/integration/mating with amps or whatever) why speaker makers couldn't produce active speakers, find or develop a perfectly matching electronic external crossover box, and then either simply recommend matching amp's or let you chose your own!!!
Avalar makes this, and they're like $12k to $30k/pr depending on models. They happend to be using the Krell crossover ($5k) and amps(forgot which) on their speakers, and it sounded glorious from what I breifly heard!
Not sure, but I presume you could chose, say, a Bryston 10b and your own amp choices if you chose, or any other combo! To me, this makes more sense for "high end" applications.
I'd much rather go that route, and take advantage of the active thing. This would allow you to use potentially tubes on top if you chose, or just SS all the way through. You could also fine tune the sound to taste, as normal.
Now unless there's A LOT MORE TOO IT THAT THAT, I see know reason other more established high end companies couldn't or wouldn't follow suit!...and maybe make some smaller monitor versions, and offer options for crossover or amps, whatever if they so wished.
Heck with this route, all the speaker maker would be doign is doing all their tweaking in the electronic crossover! OTherwise, they wouldn't do that at all, and they'd let someone else make the cross or amps for them. Or they could just do the cross and not the amps, etc, etc.
Either way, I'm sure it's not that big of a deal.
I remember years back when I first was exposed to high end audio, and my Mom's friend's boyfriend was a high end audio store owner and tweek. I remember going to his house and hearing his system, which was comprised of some custom active speakers, with some weird amps and pre, with a cool turn table setup. MAN THIS GUY'S SYSTEM ROCKED! it not only sounded so increadibly real, but the dynamics were so viserally powerful it actually hurt! Now that was some power and dynamic ability!
I think I was affraid of the system If I remember correcctly. Not really, but I remember how awesome it was...just can't remember any of his gear brands, as I was too young at the time. Oh well.