This post breaks down the entire AI ecosystem from the perspective of the supply chain—definitely worth a read. @WhitePine009 introduced the concept of an 'end-to-end AI supply chain,' where the AI stack is a multi-layered dependent ecosystem. The lower layers determine whether the upper layers can function, and there's also a frequently overlooked 'raw materials layer' running through it all. When looking at AI investments, there are essentially 'six different bets': Hardware + raw materials layer = durable, high certainty (they make money no matter who wins); Model + application layer = high volatility, winner-takes-all (OpenAI could hit a trillion-dollar valuation, or it could be disrupted by DeepSeek); Vertically integrated giants are the strongest (NVIDIA, Microsoft, Google, Amazon, Apple): they harvest profits across multiple layers, with their moats stacking exponentially.