In USA, employees are extra expensive. Employers have to pay minimum wage, income tax, health insurance/benefits, safety accommodations, deal with the potential to be sued for injuries or discrimination.

Even non US employees will get sick, show up late, screw up at their job, steal things, have to be trained, they cause drama which impacts morale and they only work 8-12 hour shifts. Shopping for a employee is a process often requiring background checks, interviews, drug tests, contracts, and on-boarding rituals.

There will be a point at which automated labor out competes manual labor at everything and having human workers will be as barbaric and inefficient as having rows of women using typewriters to publish a report instead of using a inkjet printer.

At the same time, every household or community will probably have access to a local micro-factory (3d printer farm/factory) of its own so they won't need the services of the large mega-corp warehouses as much. Kinda like how the adoption of the microwave likely reduced the demand for restaurants.