What...?

You get a more functional labour economy by having labour able to access better opportunities. If there's a killer sales agent that won't apply for my sales position because Amazon is dunking him with 14 hour days repeatedly, no one benefits besides Amazon.

That's a deceptively complex question. I don't necessarily agree that that's the logical endpoint to my reasoning: it might be that we have to continue to appeal to basic human greed/power drives - in a regulated way - in order to progress and develop as a species. It might be that a global socialist society can't do that. I'm not sure. I just think that right now, many developed countries could certainly do with reinforcement of labour rights.

To answer from another perspective, a society resembling something like socialism or anarchism is what I personally would prefer to live in. I have doubts about whether we can move towards that from the current situation or whether it's workable, full stop. But it sure would be nice.