The competition is between openai and anthropic, if there are price agreements between them that's absolutely price fixing. Or if there's collusion between the cloud providers to inflate compute. I would expect Amazon and gcp to both pay about the same in license fees to anthropic for their models though because they're paying for the same thing. If I buy an apple for a dollar at one store and an apple for a dollar at another store - maybe there's price fixing, or maybe that's just the cost of apples at the moment.