Have they come up with any estimate of the global cost of the switch, and compared that to the benefit of the new calendar? It seems to change a bunch of stuff, and add a complicated new "leap week", for no particularly good reason. Yeah, it might reduce the cost of printing calendars slightly, though a lot of people use new calendars yearly so they can write on them, and a lot more just use their computer. The cost…
"""Have they come up with any estimate of the global cost of the switch, and compared that to the benefit of the new calendar?""" If there are ANY benefits at all from switching, then that benefit can be enjoyed every year forever, dwarfing the one-time cost of switching no matter how big that cost is.
Give me $1000 and I'll give you (and your heirs, their heirs, etc) $0.01/year forever. Give me $10k and I'll sweeten the deal to $0.15/year. Give me $100k and go to $2/year.
What? You don't believe that any forever benefit justifies any one time cost?