If Facebook puts itself to be in this position without possibility of opting out, that is what I hope would trigger people to seek an ethical competitor. And, similarly, that is what I hope would occur to them would be for consumers in aggregate to be an intolerable consequence of forcing on their customers Facebook's ability (and anybody's who could subpoena Facebook) to be privy to this sort of personal information.
I won't buy one of these if it can't be operated without a phone home. I don't mind sacrificing a bit of resolution or refresh rate with a competitor if the alternative is what you say. My hope is that Facebook recognizes that there is a significant market share they'd miss out on if they pushed that point... and, more importantly, that there would actually be a significant market share that they'd miss out on if they pushed that point.