I appreciate the feeling but this isn't so much driven by principle but by business risk through contract liability or other liability that exists within whatever place you happen to be doing business.

'Adding value' is a very interesting statement and way to judge the worth of something. Adding value to who? And if that value add also causes massive harms, how do we reconcile that? So you build a brand new app with does all of the things that all of your total addressable market wants, but it also exposes all of the IP your existing clients, does that mean you will be able to achieve that TAM?

Corp IT does not exist in a vacuum. Understanding the why of that isn't a 'you should just accept this' but more 'how can we make this better and avoid mistakes already made by others'. I will always point to aviation and 'bold text is written in blood' as a great model to understand all of this not as a blocker but, instead, as a building block.