Your original point was that the pie doesn’t need to keep expanding, so you have been disproved I would say. Saying that the economy need to keep expanding is the same as saying the economy is based on infinite growth. If it stops expanding the stocks are not profitable anymore and the shareholders are going to vote to replace CEOs, so the CEOs have an incentive to make he companies grow at any cost.
For how much he lost he must be buying avocado toasts with little diamonds in them, and then getting his teeth remade every day after they got destroyed by chewing the diamonds.