Pretending that your assertion is correct that communism always fails and that it’s because of greed, that still doesn’t mean greed is inherent in humans. All it takes is a few bad actors to ruin any system, if given enough power. Capitalism is failing right before our eyes due to this tiny minority of billionaires and capitalism had already failed due to a tiny minority of super wealthy in the past before it was rescued in response to mass protests that threatened revolution.

Speaking of salvaging terrible things, the wealthy used to build hospitals and libraries only as part of reputation laundering. They will do nothing unless they feel threatened. You’re focusing on tech in particular, but it’s a feature inherent in the ultra-wealthy. They will do only enough to save themselves and continue holding their position of power, otherwise they continue pushing limits.