Part of the issue is everyone has their own preferences and wants to be able to build their own system and tweak it to perfection. That's part of the hobby for many people and full active speakers take that away for the most part. Active bass makes sense because good bass is good bass, it's critical to get it right but there's not nearly as much subjective difference in opinion on what good bass sounds like. Also, an active bass speaker relieves the mid/high amp from having to drive the bass so choices for amplification can be broader and the amp can be much smaller. It makes a lot of sense imo while full active really does not, at least for a lot of folks.