I disagree, Yahoo was actually seen as a technological leader and, unlike Google that was purely a search engine in its early years, Yahoo was a full platform that seemed poised for a while to become a landing page for the internet.

When it comes to AI there simply isn't a moat - Anthropic would be my best guess out of the current entrants due to them trying to construct one via value-adding code assistance tools that might create enough friction to prevent customers from jumping ship but the models themselves are a commodity that depreciates extremely quickly. If you want to retain the frontier premium you need to constantly be improving due to the ease of distillation.