As long as the workers have enough money to buy what is produced, and there's no economical stagnancy, capitalism is fine.
But humans phooking suck, they are all dicks-cunts-twats-badgers, and someone gets greedy, takes money for them, workers have their pay cut, no one buys unnecessary things->
there's economical stagnancy and everything gets screwed up.
DAMN HUMANS! YOU RUINED HUMANITY!
Except war business, war never changes, therefore its business never changes, and you earn a-fucking-lot. Unless you get caught. But you can't if you are a legal weapon seller.