I've spent four years working as a data scientist, and I keep wondering: is data science really becoming an essential tool for every business, or are we just in a hype cycle that will fade? I've seen small companies pour money into complex models, only to realize they lacked clean data to begin with. At the same time, ignoring analytics entirely feels risky when competitors are optimizing every decision. What has your experience shown—does the investment actually pay off beyond tech giants?