This was not a small society. Look up the Ummayad Caliphate[0] to see how large it reached.<p>And yes, with more people there is a higher likelyhood that not everyone will do their duties. However, all that is needed is a critical mass (whether in the number of people, or the total wealth produced) that does. As I pointed out, if the ultra wealthy were forced to &quot;pay up&quot; in order to help out the poor and oppressed, we would be in a very different place. Not to mention all the tax money wasted on the military and invading other countries.<p>The other point I brought up is that of dealing with interest, and other exploitative transactions, which are forbidden Islamically. These aid the wealthy, and hurt the poor. All these factors go hand in hand to raise the quality of life for society.<p>[0] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Umayyad_Caliphate" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Umayyad_Caliphate</a>