Answer: This law has nothing to do with socialism or capitalism but simply stems from nature. Nature obliges all of mankind to be connected in order to provide everyone with a normal standard of living, security, and success.
Society must be mutually connected in a good and harmonious way. It is clear to any rational person that everyone would be better off in such a society, both socialists and capitalists would agree to that. Inanimate, vegetative, and animate nature exist in absolute harmony and cooperation, and mankind must achieve the same harmony.
The only problem is the human egoism that stands in our way of living a happy life. Egoism pushes everyone to be proud and try to be above others. Instead of investing in society and receiving from it only what one needs, like the organs of the body that operate harmoniously, everyone tries to dominate others in order to give the least and receive the most. Egoism is a special force that is typical of mankind, and this is what stands in our way of being mutually connected and united, and thus it ruins human society.
All of nature is perfectly balanced, although we don’t see, understand, or feel that. The only force that disrupts the balance is the force of the human ego that wishes to dominate the inanimate, vegetative, and animate nature, and even other humans, and actually the entire world! People have built different types of societies throughout history, and our ego disrupted the balance in them over and over again and led to different new forms: slavery, the dark Middle Ages, capitalism and even more modern social forms. However, each time, egoism always disrupted the good relations between people and brought the end of a particular regime.
A divided society is like divided organs in a living body, which bring about its death. Life can only be when unity is maintained.
From the 4th part of the Daily Kabbalah Lesson 6/9/15, Writing of Baal HaSulam