> they are able to later control access to it
This has never realistically been the case. An illusion of control is provided by facebook, but they've never really put much effort into it. For a really simple example, look at how long content remained available to the entire internet after "deletion". Sometimes it took years.
Expecting any semblance of privacy from a company who profits from using and selling your data is, if I'm being blunt, lunacy.
