Passive crossovers can get pretty expensive, so I'm not sure how much of the decision comes down to cost with the higher end speakers. Passive crossovers give the manufacturer full control of the crossover interaction once the speakers get into the end users hands....not so much with an active crossover.
Active vs passive crossover
I think most of forumers in this plaftorm know what are active/passive crossover (essentially crossover before/after the amplification) and understand the pros and cons of them. Some if not all might even agree the best sound reproduction solution is active crossover with DSP. But, my question is, why the vast majority of companies in this industry still chooses the passive route.