@bigtwin
Great question. I do not understand why a speaker costing many tens of thousands sounds so much better with Townshend Podiums, they just do for the vast majority of people. It is because of the vibration isolation and reduction. But that is as far as I can tell.
Why don't speaker manufacturers incorporate them... another good question. However, if you measure or watch the video on Townshend's site you can see the difference in vibration.
I actually started my most recent investigation into vibration by installing and seismograph in my home (on the same slab of concrete as are my speakers) and the vibrations are very surprising and consistent with changes in sound quality at night and on weekends. Also, I can see the effects vibrations transmitted to the speakers and the dampening of the Townshend podiums. I can hear the very obvious improvement. So, at least for me not Kool Aid.