I think what is spooking the bazillionaires is the approaching human zero population growth (oh, let's call it #NetZero!!) For the 1st time since the beginning of the industrial age, it looks like sometime in the 2080s world population growth will hit zero.
I suspect we really need to use "net', because it appears to be caused by… bazillionaires, via all the reasons you mention (plus farming us plebes with our pension plans, our retail investing) and induced #ClimateChange causing war.