Love this tiny bit of theory from an old Soviet film about the revolution, between Tanya the nurse and the political comissar Ignatyich:

Tanya: Listen, Ignatyich… Why isn’t there Soviet power abroad? Are they stupid?

Ignatyich: Go to sleep.

Tanya: But how come, Ignatyich?

Ignatyich: Seems they don’t have the strength for it. And they live better than we do. They’re not desperate enough, haven’t ripened for it yet.

It’s a great film, shame there doesn’t seem to be a version with English subtitles on YT.