Hospitals themselves aren't really "infrastructure." All hospitals can operate independently from each other, so holding one for ransom only affects the one. If

Hospitals themselves aren't really "infrastructure." All hospitals can operate independently from each other, so holding one for ransom only affects the one. If you can actually shut down a pipeline, you affect everywhere it ships to. Hospitals obviously do rely on infrastructure, so you'd see much more panic if someone could disrupt a national supply of blood plasma or insulin or something.