Less of a concern. If Apple decides to go into the Medical gadgets field and updates their terms of service accordingly, you are basically hosed. There's no recourse. Not even an alternate 'off-Market install'.
Unless your customer's Android device happens to come from AT&T, where you have the exact same issue.
(This isn't to say I don't agree with you that they shouldn't be able to kick you off, but, you know what? No mobile platform is good in that respect.)
Yes but your program will still work on other android platforms that don't try to prevent non-app software so the software development effort investment isn't wasted.
(This isn't to say I don't agree with you that they shouldn't be able to kick you off, but, you know what? No mobile platform is good in that respect.)