What's a hypothetical technology that would enable world socialism to come about quickly?

Try to think of something advanced but theoretically possible that would rapidly proliferate. No weapons.

My first thought was some kind of farm tech leading to a second agricultural revolution, allowing AES countries to thrive despite sanctions. Some leap forward in permaculture or vertical farms or whatever.

Another idea was a breakthrough in cryptography makings comms be completely anonymous, giving insurgent movements a more even playing field.