When Olugbenga “GB” Agboola founded the fintech startup Flutterwave in 2016, he articulated a very specific point of view. Instead of adhering to the growth-at-all-costs mindset that animates much of Silicon Valley, his company would pursue expansion only as it served the needs of its customer base. “Our growth has been customer-defined, our expansion is always customer-driven,” Agboola said.