Yeah, thats why I meant I was in a spherical cow-situation, this was a situation where we took over a company in the exact same field and I had 5 years of experience on which tweaks would need to be made to be able to rationalise away positions.

This sort of system only works with internal software and an unusual amount of data. If we were in the business of selling that software we could not have charged a higher price for the new version over the old, the tweak could only be unlocked because we were able to control staff hiring and staff onboarding fully to make use of the new changes.