Earlier quoted context omitted.
You are assuming the answer. (The old phrase for this was "begging the question"). Someone could easily ask "Why don't the landlords, who get all that money from rent, spend it on something, and thus drive growth?" And you can easily answer that: the wealthy spend less of their income, they save more, therefore the high profits from rent increase the savings glut, etc, etc, etc. But you should state the answer direct…
In your example, aren't you implying that landlords and other wealthy individuals aren't simply not spending, but actually hoarding cash? Most wealthy individuals aren't holding cash, they put the money in a savings account or investment that has a return. This money appears to be held to most people, but even money in a savings account makes its way back into the economy by affecting the reserve requirements of bank…
you are assuming that people are completely stupid.. like you seem to be implying that people in this thread literally think that Apple has a big aircraft hanger filled with dollar bills. Not even the dumbest people in the world think they. They think of hoarding as putting money in the bank.