It is called market collusion, and Jensen Wong confessed on air to "advising" SK Hynix CEO to align with his corporate projects a year before the "AI" supply chain take over.

https://en.wikipedia.org/wiki/Collusion

Technically against the law, even if folks reject the fact AMD & Nvidia are Monopolistic competitive firms in the GPU markets. Thankfully the LLM crowd are rapidly moving away from the CUDA ecosystem. =3