...have to be surveilled by the US government for the US to get info on them. Australia,, Japan, Britain and many others can and do monitor US interests, including and especially, anything electronically generated, and pass that back to US agencies as they see fit. Bottom line, the US has not had to spy on its own folks, others do it for us and have for decades. Now, given how obnoxious the US has been in the last year, I would suspect that those foreign countries may be a tad bit less interested in helping the US
Given AI, very accurate speech recognition and broad spectrum/large capacity electronic collection and automatic sorting capability, I would not be surprised if some non government entities aren't already collecting data from a distance and selling it to the highest bidder. Whether this is business intelligence or targeting individuals for whatever purpose it would be amazing if this has not already been in place for sometime.
Bottom line, nothing you do electronically is secure unless you are using end to end encryption. And anything you do in plain sight is obviously open to recording.