An economist would answer your question by pointing to the theory of "comparative advantage." Here's dry formal description of it: https://en.wikipedia.org/wik

An economist would answer your question by pointing to the theory of "comparative advantage." Here's dry formal description of it: https://en.wikipedia.org/wiki/Comparative_advantage https://en.wikipedia.org/wiki/Comparative_advantage and a somewhat friendlier description: http://www.econlib.org/library/Topics/Details/comparativeadvantage.html http://www.econlib.org/library/Topics/Details/comparativeadv...