I can see the fly wheel in action for Nvidia[1], but in terms of model building - I think the companies that have the advantage here are not Anthropic or OpenAI, but rather companies with substantial revenues from other sources - Google is the obvious player here - reported to be planning on spending 185 billion this year without having a raise a dime from the markets, but there are plenty of other companies - like Meta or Alibaba who can easily fund the longer game from existing revenues.