Nothing wrong with it, but we know they aren’t getting say 500X "better" sound than from a pair of $2000 Polk R700 for their $1M. What they are getting (hopefully) are speakers that are a work of art, beautiful beyond imagination, ones that will fit into their similarly priced living room and all its expensive appointments.
For instance, I’d be curious as to what stereo and system components Elon Musk has in one of his homes. Since he is or was married to Grimes (a musician) it might surprise all of us.
Then there are "rich" people who just buy whatever they want even if not audiophiles. For instance buying expensive cars, when they aren’t even car enthusiasts. It’s more or less buying something commiserate with wherever they are up the food chain.
I recall stories of oil rich Saudis just leaving "expensive" BMWs on the side of the road if they had issues, and then buying something else. When you are "that" rich, wasting time getting something serviced is beneath you.
My only hope is that at "crazy" prices, some new speaker technology is being developed that might one day filter down to us mere mortals.