The modern take on stock investment is to not give dividends, so the only way for shareholders to make money is to have the company grow indefinitely.
Obviously a capitalist won't tell you that. My economy professor kept insisting that efficiency is always positive because it only concerns making a bigger cake, so there is more cake to be divided among the people involved, which he called surplus. In reality greater efficiency has a cost, and the cost is paid by people, while other people pockets the surplus. Fuck capitalists.