I believe Zu simply markets the standards to the audiophile community do to set up issues, lots of problems in helping on intergration due to choices of about 50 processors out there to handle the crossover etc.. I mean that can't deal with all products and combos that the pros could use
End user is not just plug and play anymore and it is more complex
Not to mention more cables, more power supplies to plug in, and simply more cost and confusion to the customer.