The document emphasizes the critical need for businesses to implement responsive web design due to the rising prevalence of mobile browsing, noting that 93% of small-to-medium business websites do not render well on mobile devices. It highlights the detrimental impact of poor mobile experiences, with statistics indicating that many consumers are likely to switch to competitors if dissatisfied. Additionally, it advocates for responsive design as a cost-effective solution that enhances user satisfaction by ensuring accessible and adaptable websites across various devices.