Good point.
Tx. I’m not sure if customs of inheritance on the Arabian peninsula
commanded full endowment of the first son only, as was the case in the Levant; but, for a huge number of second, third and fourth sons left destitute, rapine and pillage— more addictive than the poppy, and given blessings by this so called Allah—must have been an irresistible temptation for them to acquire wealth and power, quickly, while engaging in pursuits they grew to love. Mohammed had a businessman’s intuition, I reckon.