Because "cartelling up" is much, much harder and more rare than people think. See e.g. https://en.wikipedia.org/wiki/Cartel#Long-term_unsustainability https://

Because "cartelling up" is much, much harder and more rare than people think. See e.g. https://en.wikipedia.org/wiki/Cartel#Long-term_unsustainability https://en.wikipedia.org/wiki/Cartel#Long-term_unsustainabil...