Communism big thing was less "right place right time" and more the fact that it is utterly enticing candy to anyone who fancies himself an aristocrat
It posits that the solution to government corruption is to kill the current crop of corrupt parasites, abolish commoner rights, and give absolute totalitarian power to the new crop of government employees... who would all be Angels that would never misuse this absolute power.
There is a reason why the ones pushing communism the hardest are the rich, and why communism is always so well funded by the banks.
Communism primary propagation is the ultra rich of each society pushing for it.
A way to finally rid themselves of the Bourgeoisie (middle class). Leaving only two classes, Aristocrats and Serfs.
The so called "rising up lower class" is a combination of astroturfing, controlling media, and the fact that they are intentionally creating lower classes to begin with via special programs