These customers are different, Google had to go through a lot of work to allow them to legally use their products, and will get to charge a premium. This is the high end of B2B, and unless they're moronic (which is possible) they'll know the medical industry moves slow, so any customers they acquire will almost guaranteed be long term customers.
..." while our engineering teams have put a lot of effort and dedication into building Google+ over the years, it has not achieved broad consumer or adoption, and has seen limited user interaction ...""""
I'm skeptical too, we can only wait and see. I'm essentially just hoping they understood the market they're entering but hey it's Google.
I'd also imagine they'd have service contracts for X years though? I can't imagine a health network wanting to use their service without guaranteed support for 5/10+ years. (Heck I imagine it'd take a year or two to even develop applications that use it)
https://techcrunch.com/2011/06/24/google-shuts-down-medical-...