The coutries under the soviet were famous for their subversive sense of humour and jokes. The whole idea of the Communist party was that is was the vanguard - comprising about 10-120 % of the population, and even then, these were mostly the careerists.
And Marxism itself was a western idea, a radical version of the Jacobin ideology of the French revolution. It  declared itself scientific and so was defeated by reason. It was not an eentirely alien ideology.

Islam is immune to reason, it has no sense of humour and does not tolerate it in others. It is build on a completely different foundation even if it has many of the outward, surface signs of mass psychosis (rallies, shouting, chanting, group think) shared by other totalitarian mass control movements.  It has no regard for the individual, only for the tribe.
It does share the paranoia and self-delusion of the soviet mind.



What would happen if Saudi Arabia became communist?
First year, nothing.
Second year, nothing.
Third year - they'd start rationing sand.