"Money" is as productive as the underlying system of production it sits on. You and I can invent foo and bar, with some creative financing sell it to each other

"Money" is as productive as the underlying system of production it sits on. You and I can invent foo and bar, with some creative financing sell it to each other for a million dollars, and have a million dollar net worth starting from zero while not producing anything of value. A lot of modern day financial "inventions" seem to be of this kind of "money productivity" with zero net value added to the world.