Given that its already deployed in academic contexts, I suspect that the more invasive employers are already using it. Finance, defense, etc.
What really scares me is the number of people that adopt this strange Panglossian view dismissing every abuse of power as a one-off that cannot possibly reveal widespread systemic failures.
[0] https://www.bloomberg.com/features/2018-palantir-peter-thiel...
And no - CCTV is not widespread at all. There's far more CCTV in the UK than there is in the EU where I live now.
States do indeed issue local IDs. There is no common EU ID card and no common EU passport.
There isn't even a common immigration database for Schengen - although that's planned for 2023. (It was supposed to be 2022, but it's been delayed by a year.)