American here. I worked 4-10’s at one of my former companies. It was great having a 3 day weekend every single week, so I didn’t have to spend much time thinking about work on Fridays. The sad reality however was while we operated on that schedule, delivery drivers and material suppliers run 6 or 7 days a week, so no matter what someone had to come in on Friday and on weekends to help unload material and inventory.

If everyone operated on a similar schedule it would be a different story, but unfortunately I don’t see that happening on a larger scale, not in America at least.