[watwut]

Because needs and preferences of lower level are less and less reflected in policies and production. They are becomming permanent underclass with no future. They dont matter for politics nor for economics. Preferences of super rich are overwriting them, while super rich become richer, while super rich offload all risk they take on others.

[mlrtime]

That still doesn't explain why the gap needs to narrow if the min/median are rising. The pie can increase, everyone can be better off without shrinking the gap.