Numbers must go up. In the stock market anything steady state is dead.

This isn’t quite true. There are many businesses like Colgate that are steady state with a reasonable amount of growth that do fine in the stock market.

Numbers can naturally go up with the population, unless the product stays the same and newer generations decide they don't want it. Facebook suffered a double hit from both changing the product to scrollslop instead of a way to check on friends, and from becoming "uncool" with young people because it's what their boring parents used.

Infinite growth!!! How silly we still are as a species. The more of us there are, the stupider we act, and we don't even do anything to prevent it, we just let the consequences of our own stupidity roll over us one day, when they can no longer be stopped.