This argument also relies on a ridiculous definition of rational.

Whilst rational economic actors do attempt to maximise their profit, the argument ignores that this takes place in the context of varying time windows. In effect it argues that it’s “rational” to take a tiny increase in profit today even if that destroys your business and all the potential long term profits you could obtain tomorrow and the day after. This definition is absurd and no actual business works that way.

Mike Hearn, Replace by Fee, a Counter Argument