Not only investors. Everyone needs stocks to forever go up. We’re kind of fucked, because once it becomes apparent that the infinite market growth isn’t possible and we reach a theoretical ceiling of stock market, the world and economy will probably be in serious shit.
I’ve tried looking for some articles or papers about what would actually happen and couldn’t find any, but our society right now is kind of based on that premise, and once it stops it’s going to be a problem. Mostly for the ordinary people, though. And of course, caused entirely by the greedy investors struggling to figure out how to keep milking the cow. Fuck capitalism.