A core assumption of capitalism is that when individuals act in their own self-interest, their actions tend to produce outcomes that are beneficial for society as a whole. This seems like a compelling piece of evidence!
Bit of a premature celebration here, we won't know if it is for 10-30 years.
I think it's probably a good thing in this case.
Certainly the selfish greedy ambitions of corrupt politicians and short-sighted corporations aren't good for the people dying and being displaced. I mean, we can play with numbers and try and argue a "greater good", sure, but it does seem a little convenient that we can act like greedy self-interests are helping everyone when there are current victims.
There are plenty of quarries that effectively condemned land that destroyed entire ecosystems because of greedy mineral companies. Pretty much anyone using this forum is using a product that was produced by unethical and/or child labor. We're already seeing negative effects from climate change, effecting many, many people, mostly in poor countries, and it's likely to get worse before it gets better.
You could argue that these systems benefit some people; I certainly benefit from having cheap electronics, but of course you can always cherry pick good examples from pretty much anything. This is with the current system that we built.
Now sure, there might be some hypothetical system that maybe fixes these problems, but due to the use of the word "evidence" in the comment I was responding to I didn't think we were talking political theory.