Yeah, it's fairly obvious from the fossil records that all humans were using cash back in the tribal nomadic days hundreds of thousands of years ago. There literally has never been any other ways humans have organized other than wage labor.
Do not reply in bad faith. You know the person you are replying to was not saying that capitalism is the only system to ever exist. They were saying that, despite its numerous flaws, it appears to be the most successful system we’ve tried.
I'm not replying in bad faith. It is very obvious that capitalism has always been with us and always will be. If you observe birds long enough, you'll start to see them exchange tokens with each other, but results like that rarely get published