The article brings up Ford Motor Co. in the early 20th century as an argument for why this doesn't have to be the case. There have been other examples of businesses that care for their employees and society at large. The author is saying that that mentality needs to come back into fashion.

I think that this type of thought about strengthening the middle class is possibly the most dangerous and verboten to the people with a radical utopian worldview who are looking for revolution. In a sense, it's probably more important to attack this than it is to attack billionaires. Massive inequality is a much preferable state for would-be revolutionaries than a stable middle class with centrist political views. Which only reinforces the author's point.