The thing is... we still do adaptations of Shakespeare, because human behavior hasn't changed all that profoundly in 600 years.
By the time we actually have privacy again, there will be enough information out there to mine about how people reacted five, ten years ago for the old data to continue to retain value. It'll just be repackaged and re-interpreted over and over again.
The coffee shop may no longer know that you also like kayaks, or bulldogs, but they might not need information like that to peg your preferences based on what stereotypes you fit with the information they do have.
By the time we actually have privacy again, there will be enough information out there to mine about how people reacted five, ten years ago for the old data to continue to retain value. It'll just be repackaged and re-interpreted over and over again.
The coffee shop may no longer know that you also like kayaks, or bulldogs, but they might not need information like that to peg your preferences based on what stereotypes you fit with the information they do have.