I think there's a big difference between companies like Google and Amazon that were operated unprofitably for years but did have the option to pivot in to profitability for a lot of that time. I would also consider Uber more of an outlier than the rule in terms of blitzscaling. Maybe OpenAI will be kept alive on life support for a while because there is so much in the industry riding on AI being the next big thing, but their problems are myriad and include terrible unit economics and a complete lack of moat in an environment full of bigger organizations that can pour nigh unlimited money into trying to outcompete them. Maybe it makes me a pessimist to point out basic business fundamentals in the face of unquestioning optimism.