Over an undefined time span it isn't zero-sum, but on a day-to-day or year-to-year basis it might as well be zero-sum unless you can somehow get the world econo

Over an undefined time span it isn't zero-sum, but on a day-to-day or year-to-year basis it might as well be zero-sum unless you can somehow get the world economy to grow faster than a few percentage points at a time. Especially when so much of that growth is tied up with not very liquid capital assets of a much smaller demograph of wealthy people.