There is a very simple concept here that many don't get and it is the reason why we need something like bitcoin. Fiat currency is just numbers, the money in your bank account is just numbers and the money in your paychecks is just numbers. It only has value because we believe a government that it has value. Stock markets change the numbers and the governments of the world back up those numbers and say they have value.
There are zero sum games, stocks markets aren't one of them.
Great explanation, but I guarantee few (even here) understand the concept of fractional reserve well enough to realize fiat money literally is created and destroyed from nothing in loans and repaid debts.
While true for stocks in fiat money, note that crypto is not a zero sum game either, but for different reasons.