TS forgot to mention many M40 actually happen to support other relative who is B40. But that's how the life is, you are either top dog or you are bottom feeder. Once upon a time, such as in 18th or 19th century, M40 did not even exist. It is either you were rich, or you were peasants. The world has a temporary disorder when M40 emerged, now it is going back to the natural order, only polar opposites exist. No middle ground.