I don't know any cars that have fog lights that don't revert to the off position/setting when the ignition is turned off.
I've had British, Japanese, Korean, Swedish, French and German cars in the last 10 years and every one had fog lights that switched back to off when the ignition is turned off.
People who drive with then ON these days, have turned them on - it's not been done by accident, it's been done by someone who doesn't know what they're doing and who shouldn't be driving (these are the same people, usually, who sit in the 3rd lane on the 4 lane sections of the M1 at 68mph, when there is no be ahead of them in lanes 1 or 2 - and they're oblivious to the gridlock they're causing behind them).
Rant over