This is probably the one moment in time there really doesn't need to be any price fixing / collusion. If demand for your product has temporarily spiked so high

This is probably the one moment in time there really doesn't need to be any price fixing / collusion. If demand for your product has temporarily spiked so high you can have 80% margins, then its not like your competitor has any reason to price compete. Particularly in an industry where spinning up new capacity is a multi-year $10s of billions investment.