Can you expand on this a bit? A house buyer gets money into their hand (or at least a cheque into their solicitor's hand) to buy a home. Where does this come from if not from the lender? Obviously the lender will probably borrow it from elsewhere but the borrower ultimately gets the money from the lender.
That's exactly what surprises me about this thread: the assumption that banks actually have the funds that they loan out. If the reserve requirement was 100% this would be the case, but it's far from it.