Of course no one is doing that. I work on throughput, not salary. A lot of people are in the same position, whether they are flat-rate or hourly. If I cut my schedule down to four days, I simply will not make enough money to sustain myself. There is a hard limit to how much work I can complete in a single day, and I cannot compress six days of output into four. That is the point I was making, a four-day workweek does not benefit workers whose income is tied to throughput or hours worked. It primarily benefits salaried employees whose pay is disconnected from daily output
Did you actually read what I wrote?
The real question is: who actually benefits without losing income? The answer is: a minority. Roughly 25-35% of workers, mostly salaried, white-collar, outcome-based roles, can compress or rearrange work without taking a pay hit. For them, four days is mostly a scheduling change.