The challenge of sacrificial giving is one way of testing what our priorities are. None of that is meant to imply that paying attention to wealth in the community at large is always bad, although the materialism of our society in recent years has been shameful. From a general economic point of view increased production makes it easier to provide social services. The first danger is idolatry. Then, in addition to making an idol of money, one danger is that your gain can be at the expense of another.
Exploitation is common and easily hidden or justified.
Landowners who took too much of the produce and left the workers hungry were condemned in ancient times, as were mill owners in modern history. Usury, exploiting others through interest payments on loans, was forbidden for Christians in most centuries, and may well come back into consideration as we see in arguments about farmers losing their land to the banks or even whole nations having to reschedule their international loans least their people be deprived of necessities, and is has been good to see some debts of the poorest countries being cancelled. Much of the damage done by communism was justified in Marxist theory by reference to the exploitation of labour, especially as it occurred in the industrial revolution. We are going through another kind of revolution today. There is always the temptation to take more than your share, and being wealthy gives you power to take a bigger share than you should.