Harvard Business Review LogoEntrepreneurshipThe Overlooked Key to a Successful Scale-UpIt’s mastering the “extrapolation” stage, when start-ups begin to focus on profitability, not just growth. by Jeffrey F. Rayport, Davide Sola and Martin KuppFrom the Magazine (January–February 2023)Sean LemoineSummary. Leer en españolLer em portuguêsPostPostShareSaveBuy CopiesPrintConsider the tales of three start-ups that seemed poised for success.Read more on Entrepreneurship or related topics Scaling entrepreneurial ventures, Start-ups, Growth strategy, Competitive strategy and Entrepreneurial business strategyA version of this article appeared in the January–February 2023 issue of Harvard Business Review.PostPostShareSaveBuy CopiesPrintRead more on Entrepreneurship or related topics Scaling entrepreneurial ventures, Start-ups, Growth strategy, Competitive strategy and Entrepreneurial business strategy