Sure, but if the companies start competing on price they become commodities and their valuations collapse, leading to knock-on effects everywhere (eg all the circular financing also collapses). I'm not saying this is a bad thing.
Also, "circular financing" is a meme. A private company cannot create money, there is no circularity. NVIDIA may buy services from OpenAI and also sell them GPUs. If a lumberjack buys eggs from his neighbor and also sells him wood to improve his chicken coop, that's not circular financing, just business happening in both directions.
The numbers are staggering eg: https://www.cnbc.com/2026/08/17/nvidia-financing-open-ai-dat...
Tell me you know nothing about economics without telling me you know nothing about it.