You are describing altruistic gifts, not investment meant to generate a return.
All this money is being deployed to try and turn a dime into a dollar.
The biggest area I can see where money could be deployed into building something useful -- while generating a positive return -- is real estate development in cities with massive housing shortages. That's basically not allowed in the same cities. In large part, because people who yearn for an more altruistic world care very much about their own quality of life and property values than they do about the well-being of their community in the long run.
All this money is being deployed to try and turn a dime into a dollar.
The biggest area I can see where money could be deployed into building something useful -- while generating a positive return -- is real estate development in cities with massive housing shortages. That's basically not allowed in the same cities. In large part, because people who yearn for an more altruistic world care very much about their own quality of life and property values than they do about the well-being of their community in the long run.