In the US we live in a bizarre world of dual expectations.
The government is supposed to follow the law, be accountable, transparent, and must operate within a constrained, circumscribed zone of activity which is debated and discussed. That's at least how it's supposed to work.
Private companies are understood as amoral sharks who have no obligation to do anything other than operate in their narrowest self-interest, and the law is used as a club to beat them back from what they so clearly want to do, and will do if at all possible. They are unaccountable to anything other than the legal system and their share price. Suggesting that they might have any further obligation is tantamount to questioning whether capitalism should exist. It happens all the time on HN.
So of course the FBI would like to keep their hands mostly clean by having one of those accepted-to-be-horrible companies gather this data and then buy the resulting trove.
The US is SUPPOSE to do that, but I have yet to see it do any of those things with anything close to regularity or consistency at any point in living memory.
We criticize the government bitterly, but when a company does the same thing we seem to say “oh well of course they did that, what can you do, it’s capitalism and the free market knows best, ho hum.”
See: the US healthcare system.