If sameness is a recipe for losing, how do you win?
An organizational structure is all about command and control of subunits - manufacturing, engineering, sales, whatever. Within each such sub-unit IT use will have co-evolved with what they do, and be correspondingly difficult and dangerous to change. The system you use to tie it all together tends, however, to be invisible and ignored - meaning first that it's a critical component you can change for the better and second that most of the risks in doing that will be technical, not organizational.