This is not a new or novel definition that VVV is expressing. It is well accepted among economists especially those of us who follow the Austrian school of economics.VVV, it seems to me that you are redefining the phrase "capital investment" into an altruistic term of art.
Start out reading about Adam Smith's baker to get an understanding. Then Milton and Rose Friedman's Free to Choose. Then you can easily find all the columns of Thomas Sowell and Walter E. Williams.
Those four sources will give you a perfect understanding of what VVV is talking about and they will give you an understanding of how man functions best for his own benefit and for the benefit of others (social benefit as it is called in this thread).
If you don't read and understand (it's easy to understand) those four sources you will have big problems understanding it from a forum. From your posts I think you would enjoy the reading.