Why technical decision-makers struggle when choosing a path for legacy system transitions

https://www.scribd.com/document/997584648/Modularity-Decision-Native-Cloud-Services-vs-Independent-Vendors-A-Case-Study-127021

Why do teams that have moved past prototypes and are now running real systems still find themselves paralyzed when it comes to modernizing a legacy estate? The short answer: the trade-offs are concrete, immediate, and often hidden