Think of Insurance for example. How do clients get compensated for claims? In fact where does the money come from? In the case of insurance, there’s a concept called Resource pulling. Say a thousands people pay monthly, quarterly or yearly small premiums over specified time span against a quantified risk. Such funds are put in an identified pool. Over the specified time, the probability that every one gets affected by the insured risk is not eminent rather only a handful might be affected and claim compensation. In what case the pooled resources come in handy.
Group Dynamics discusses the idea of resource pulling through unity of purpose. United we stand divided we fall. Think about the Chama concept and chamas are big thing here..