That's a dangerous sentiment; one I sincerely hope you don't adhere to personally. Unfortunately, you're right in the fact that a lot of people buy into that sentiment. Adhering to the facts would make a lot of the meme level ideas in this forum disappear. Fact: Google isn't entering healthcare, Google has been in healthcare for years. Google Health:
https://en.wikipedia.org/wiki/Google_Health - Sounds familiar doesn't it? A quick search with the terms "google and healthcare" will show that Google doesn't have a handicap when it comes to healthcare. From all indications, healthcare is a big focus at Google. The've already gotten certified for HIPAA compliance with their apps:
https://support.google.com/a/answer/3407054?hl=en
Google is probably doing happy backflips at the prospect of Apple getting further into healthcare. For all their prowess in other areas, Google sucks at marketing. Apple doesn't. The rising tide of Apple's marketing is going to raise all boats, similar to what it did for Spotify via Apple Music.
As for differential privacy, I think it's a good thing. Also, it's another area Google has been working on for a fairly long time. Peek at RAPPOR