The study looked at how businesses in certain industries grow and survive. They found that revenue and physical productivity have different effects on a company's success. Physical productivity (how efficiently a company makes things) is linked to lower prices, while revenue productivity (how much money a company makes) is linked to higher prices. This means that previous research may have underestimated the importance of both efficiency and demand on a company's survival. They also discovered that new companies charge lower prices than older ones, showing that new businesses can actually be more productive than established ones.