Even in the early stages of a startup, thought should be given to a strategy for scaling the startup; not simply growing the startup. If you are merely trying to increase revenues, your corresponding costs and expenses could rise as well. If you continue with a strategy of growth, eventually your growth will become stagnate and your costs may grow out of control. You may realize that growing is not worth the financial pain.
Instead, a strategy aimed at scaling (or leveraging) the business that focuses on increasing revenue while simultaneously increasing efficiencies will benefit the business. You can focus on growing revenue while minimizing costs thereby increasing your profit margins. You are increasing the value of your company when you can demonstrate efficiency in bringing in revenue. It is a key metric that investors consider when screening companies.