Hollywood and Silicon Valley have similar problems. Big names get insulated from reality via power and starfuckers who want something from them so they don't receive the appropriate ratio of Ancient Alien Guy dot GIF reactions from people they trust. (Yes, this is a subtweet)
The one I was subtweeting was very SV-based. I think its reality-insulating-then-detachment process is the same, but the decay path is very different from the ones you mentioned (which, I agree, are pretty homogeneous.)