The messy middle isn't arriving. For nurses, teachers, tradespeople and service workers, it's been here for decades.

A nurse in 1980 could afford a house, raise kids on one income and save for retirement. That same nurse today needs more training, works the same hours and earns less in purchasing power. Housing went from three years of income to seven. The hours needed to pay for healthcare nearly quintupled. Nobody named it the messy middle because the people living it didn't write policy memos.

What AI does is extend that squeeze upward. The knowledge workers who were shielded by the skill premium now face the same cost pressures everyone else has been navigating for decades. Except they're arriving with student debt and spending built around salaries that may not exist in five years.

Where they land matters as much as the displacement. A 60% pay cut is survivable if housing costs three years of income. It's catastrophic if housing costs seven.