The fine folks in the private sector deserve some 'praise' here. Even if you magically kept the feds off people's backs, (which, apparently, having a section dedicated to precisely that in your bill of rights doesn't necessarily do...), if somebody suspects that the data collected by your sock drawer can be sold for more money than it costs to collect and store, they'll do their relentless best to worm their way in. Based on the absolutely sweeping success of Facebook, Google, 'loyalty card' systems, and the whole genre of shit-that-phones-home-to-the-mothership-for-no-particularly-good-reason, who would bet against their success, even in a hypothetical world where they have to get clickwrap 'consent' for every last morsel?
(And, once they've done that, not only are you getting spam mocking the holes in your socks and suggesting some more flattering underwear, the feds can come along and just scoop up the whole database rather than having to go build their own from scratch.)
(And let's not even think about the fact that 'The Internet of Things' is basically a polite way of saying "Hey, SCADA is so easy that it should be a consumer product!" and then ponder the...exciting...field of SCADA related security problems.)