Yahoo's failure in comparison to Google can be attributed to several factors. While Google focused on simplicity, speed, and accuracy in its search engine, Yahoo tried to do too much, losing its core identity. Google's relentless innovation and adaptability kept it ahead, while Yahoo stagnated. Moreover, Google's successful foray into advertising and mobile technology propelled its growth, while Yahoo struggled to keep up. Ultimately, Google's superior vision and execution proved to be the key differentiator, leading to Yahoo's downfall.