While many things may be true (it seems like the writer doesn't have a lot of real life experience), one thing that will decide on the migration: Vendors will just stop selling anything except new PCs with Win8. Our company has a mix of devices from XP to Win8 (we finally replaced the last of the Win98 machines). Our PC vendor simply sells the latest O/S and that is what we buy. FYI: BYOD is forbidden in a number of industries and should not be encouraged.