Granted, ISA is less crucial than it used to be, but there's still a lot of x86 binaries in the world.
Depends on what you do.
Gaming PC = x86
Work laptop = x86
So AMD or Intel. "Switch to Mac" means ripping out the whole MS management stack. Or keep/move to 365 and Intune but tune it to Mac. Or keep 365 but move management to Jamf. Can be done ofc, but it's a process.
That's how I still see it. Maybe I'm out of touch :)
Surely that's not the only advantage?
Not but really, yes it is doable but takes time and hiring new admins or re-train.
Yes if you are company of 20 people go buy Macs and GSuite.