Switching from one service to another can be a painful experience, especially when a platform has tailored itself to your unique preferences. This is where cognitive effects come into play. Unlike traditional network effects that rely on user aggregation, cognitive effects personalize experiences based on individual behavior and preferences. This personalized intelligence creates a deep understanding that makes switching services not just inconvenient, but almost self-defeating. For years, technology companies built moats through network effects, exemplified by giants like Facebook, Amazon, and LinkedIn. These moats were structural, relying on the sheer number of users rather than a nuanced understanding of them. Now, a shift is underway. Cognitive moats, which rely on personal engagement and understanding, are emerging. Services like Google Maps and Spotify already exemplify this, retaining high user loyalty through anticipatory features that align with individual habits and preferences. Three factors are driving this change: advancements in technology, user readiness for deeper personalization, and evolving business models that prioritize privacy and alignment of incentives. Large language models and intelligent agents can now offer more contextual understanding. Users, weary of shallow personalization, seek more meaningful interactions. Subscription models that emphasize privacy allow companies to build trust, paving the way for cognitive products that feel like genuine partnerships. Startups have an advantage in this landscape. While established companies are bound by their existing architectures, startups can design cognitive experiences from the ground up, focusing on specific areas of expertise. This depth of understanding enhances user trust and accelerates the accumulation of valuable data. Cognitive effects can compound faster than traditional network effects, allowing companies to create a stronghold one user at a time, rather than needing to dominate an entire market. The future of software lies in making this cognitive understanding portable, moving beyond isolated apps to a more interconnected experience.