> A third key factor in several of the failures was the desire for Feature Parity with the existing set of systems and business processes. These attempts began

> A third key factor in several of the failures was the desire for Feature Parity with the existing set of systems and business processes. These attempts began by promising to give the business exactly what they had today with somehow, behind the covers, the technology having been "improved". I'm surrounded by legacy systems, and have experienced the above almost every single time. It's remarkable how strongly groups of people can dread change to the point that they insist any replacement must be as close to the status quo as possible. This dread of change can approach Stockholm Syndrome-like levels of denial of the deficiencies of said status quo, to the point where you can't even question it. Granted, this is anecdata, but in my personal experience, legacy displacement have primarily always been "people" problems rather then technical ones.