User experience (UX) plays a vital role in a company’s profitability and growth, as highlighted by Charles Leclercq's experiences leading product design at startups and major firms. He argues that UX isn't just an aesthetic layer; it's a critical factor that converts product value into revenue. Early adopters may tolerate poor UX if a product solves a significant problem, but bad UX can deter users entirely. Leclercq references Don Norman's concept of "The Gulf of Execution," which illustrates how a disconnect between user intentions and product functionality can lead to failure. He provides two case studies from his career to illustrate the impact of UX on business success. The first involves ARxVision, an accessibility wearable, where user experience is paramount. The second case focuses on AdInMo, an in-game advertising SDK for Unity developers. Here, a complex onboarding process led to broken integrations and revenue losses. By redesigning the onboarding flow, the team cut integration time to ten minutes and enabled self-service for developers, creating a new growth engine for the company. Leclercq emphasizes a lean approach to design, recommending that teams identify user pain points before investing heavily in aesthetics. By observing user struggles, he was able to address specific issues that improved overall satisfaction and business outcomes. He cites McKinsey data showing that companies treating design as a strategic business function experience a 32% higher revenue growth than those that don’t. The message is clear: effective UX is crucial for making a business viable and can significantly influence its financial success.