A lot of transformation leaders are [personally] successful because they know when to jump ship and how to sell their achievements whilst glossing over the failures. They don't have to live with the pain of BAU, a paper success with a bunch of teething problems is the feather in the cap needed to land them a gig elsewhere.What I hate is you then see another company all hyping up this person coming onboard after their "transformative" work at the previous company (it was transformative alright but not in a good way) which is now on its knees trying to survive... and I just think "you poor sods". Funny they just seem to be able to get away with it.
They also have a huge advantage of often getting both the money and the mandate to implement changes that were already known about / desired by the existing boots on the ground. Likely a fair chunk of the improvements could've been achieved anyway without their input if the support had been provided directly. Or it's like, millions get invested in a new system after years of underfunding of legacy systems. If half the money spent on implementing a new system had instead been channelled to the legacy system, it likely could've delivered many of the outcomes cheaper, faster and with less disruption. Not always the case and of course in some cases legacy systems genuinely need replacing, but I'm a bit jaded to the fanfare of shiny new stuff being delivered by outsiders.