Idea in Brief

The Challenge

Many start-ups and new corporate ventures that grow very fast never sustain profitability and hence scalability.

The Insight

In an often-overlooked stage of growth—extrapolation—successful start-ups ensure that each new customer brings in additional revenue and incurs only marginal cost—the key to lasting, profitable growth. During this phase firms turn product-market fit into profit-market fit.

The Takeaway

To keep scaling up, a start-up or a new enterprise initiative must have a host of resources in place—such as a proven monetization approach, a strategy to exploit network effects, and robust capital resources. It must also be managed as an “ambidextrous” organization—capable of exploring new businesses while exploiting its existing core business—and systematically remove internal business-model constraints on growth.

Consider the tales of three start-ups that seemed poised for success.

A version of this article appeared in the January–February 2023 issue of Harvard Business Review.