Why aren't component active XOs more popular?

I have got no idea why they are not more popular
since they are superior in EVERY way.
Most of all they allow you to remove
inductors from the signal path; I'd rather have dozens of other
components then one inductor! They ruin everything:
they blur transients, shift phase and eat at least 50% of your
amplifier power as their minimum insertion loss is 3dB!

Errr...with a propper electronic crossover phasing doesn't get messed up in the first place so that is not really an issue! Remember it is the passive components of standard xovers that do all the messing up, remove them
and the problems disappear.
Electronic xovers are available with any slope you like if you really must have
a first order one or your driver demand, Bryston and LCAudio come to mind.
Many already contain delay to adjust timing differences between drivers.
Phasing can also be made continously variable if you want.
This is all possible in the analog domain so no need for convertors
and all the horrors they can produce.
Even other than the standard slopes should be possible.