What OT used to be ...
OT used to be somewhat clumsy, but pretty reliable and secure. Contemporary IT is much more agile, but not overly reliable and not at all secure. It would be great if some of OT's positive aspects would flow into IT, at least in critical application areas. But one would not expect this to happen when big IT barns drive the convergence of IT and OT. Bad apples usualy do spoil good apples in the same basket, and very rarely get healed by the good ones ... (;-))