A few years ago we were discussing how some companies were trying 4-day weeks and someone said that they'd like to try four 10-hour days instead of five 8-hour.

They could not imagine that it meant working fewer hours.

Yeah, there's billions, maybe trillions or beyond, of dollars' worth of investment put into making sure everyone "Really needs this job." which can be ripped away from them in an instant, so they won't be inclined to risk any "insubordination."