Cash Cow: "Who has the Cash?" Followup

``At an individual company level, it's obvious that if DuPont has a bunch of marketable securities on its balance sheet, it is free to sell those securities and spend the money on new equipment and so forth. The issue is that somebody else has to buy those securities. At the end of the day, there is no less "cash on the sidelines" after that change of ownership than there was before.''