Or, perhaps the added stress (both to them and home life) was more than they wanted and they decided to stop running and go for a nice easy walk in the park.
It's presented that way because it's a philosophy rather than a science; it can't be tested in a controlled environment and it can have dramatically different results across countries and time periods.
Try explaining the nuances and risks and watch people's eyes glaze over. It's just easier to say capitalism will solve everything, eventually. Don't try to understand how.