I think it is reasonably clear from the GP that relative levels of investment was the gist; of course rich people live somewhere, moves about and try to keep themselves happy.
Then I don't see why it's important to state that those with lower incomes paying for housing, transportation or entertainment is the reason for their inability to become wealthy. Merely stating a difference in income causes the disparity is enough. Housing, transportation, communications, food and even entertainment are necessities.
