
Originally Posted by
mirv
This. Right here. It's not the underlying OS that's the issue - it's the training of people in using the software package.
There's also the case of company add-ons - here I refer mostly to MSOffice, where each company has templates and/or macros for letter headers, page layouts, etc etc etc - that might have to changed, redone, and again people have to know where to find and how to use them.
This kind of software isn't just a piece of software, it's a whole infrastructure: teaching books, TAFE courses, customer support, the whole works, and these things don't like changing unless there's sufficient motivation (which in the end means saving lots of money, or making lots of money).