This inability to go wireless or be flexible probably means that loudspeaker and traditional stereo component manufacturers will consolidate or disappear as they get supplanted by the wireless soundbar market.
I know that I was very close to getting one instead of a traditional 5.1 system like I did. I was never concerned about high SPL levels or channel separation, but I was concerned about their ability to have a neutral sound profile. That's easily remedied by going bigger, such as the Sennheiser Ambeo. I can see a day where sound bars might get an Olive score in the 4's and 5's.