Many people say that AI-powered coding has made building products dramatically easier. Yet paradoxically, getting those products adopted and driving real user growth now feels harder than ever. They're right. In the past, users flocked to new tools because the need itself had just been invented. During the early and middle stages of a platform shift, supply was scarce and demand felt urgent. What we call 'demand' today is largely the legacy of needs created in the previous era. We're now standing at the very beginning of a new age. The next wave of authentic demand hasn't been invented yet. The new dimensions of time and space that will define this era are still forming. In this new era, the most powerful sources of demand will likely emerge not from humans directly, but from the needs and capabilities of AI Agents themselves. In other words, the primary engine of evolution is shifting. The real demand creation is now originating on the agent side, not the human side. True product-market fit in the coming decade will increasingly be defined by how well your product serves, augments, or unlocks the ambitions and workflows of advanced AI Agents, rather than by satisfying pre-existing human needs alone.