There is no "ecosystem" that I can see since the data cannot be shared. Have you seen some examples where its providing value? I truly would like to know if I'm missing out on some great software.

I've helped a mid size doctor's office for over 10 years with their IT system. The only value it has for them is managing billing with insurers and scheduling patients. Everything else the system does (tracking lab reports, patient history) is either not practical for the doctors to use or they don't need it. The part about helping with insurers is a business they'd rather not be in but have no choice. The scheduling could be replaced with Google Calendar if not for the tie-in to the data already mandatory for the insurers. Overall the system is something they consider they have to use but a bit of a pain and provides no other value.