You are right about 3-D holography being more stupendous than stereo...But using based objects audio as atmos is very different than using BACCH filters...
I will stay with 2 speakers and this is why i favored the most natural approach by BACCH filters... way less costlier too...And natural because by mathematical acoustic priciple there is no timbre degradation when playing recorded original acoustic of any stereo albums through our stereo system with the BACCH ...
3-D acoustic dont need many speakers and any other DSP than BACCH filters...
re " When you listen to live music, the musicians are in front of you, not all around you. Sounds like a gatekeeping money grab to me."
That is just a practical limitation of delivering live music to an audience.
But why do we have to be limited to that when Atmos can put us sitting in the midst of a String quartet.
Not a gimmick, a paradigm shift !