Group 1 - The article discusses a new customer acquisition method developed by Japanese marketing expert Serizawa Ren, aimed at helping companies overcome growth bottlenecks in a saturated market [6][7]. - The method is based on five years of research and tracking over 300 brands, emphasizing the importance of non-customers as significant potential customers [6][7]. - The approach allows companies to increase high-quality users without incurring high costs, providing a pathway from zero to one in customer acquisition [7]. Group 2 - The article highlights the challenges faced by companies in the current market, particularly in terms of declining sales and the need for innovative customer development strategies [6][7]. - It emphasizes the necessity for businesses to adapt to the "stock era" and find new growth opportunities through effective marketing techniques [6][7]. - The insights provided are validated through practical applications in 100 companies, showcasing the effectiveness of the new acquisition method [7].