No, many of them fold, and even those that don't close departments and make redundancies. Companies can only grow if they're serving their customers with value, or if someone believes that they will do in future and puts money in for a bit to get them started.

If they get things wrong by overspending or overinvesting in the wrong thing, they don't have a wellspring of tax money to keep drawing from. They have to offer enough value to not only supply the good and make a profit, but also pay taxes on that profit.