What does the concept of entropy imply?

One of the ideas involved in the concept of entropy is that isolated systems tend to become disorderly after achieving some form of orderly state. This means that my body system is maintained in order at the expense of some other living systems via eating them. An air-conditioned room is maintained in order at the expense of disorder in the environment. Is the concept of entropy the reason for the prevalent rich and poor divide?

I reason that a system tends to fail. This tendency to fail is higher the higher the complexity of the system is as the difficulty of maintainence increases.