When you rent housing, your landlord is likely to require some identification for a credit check. Your face isn't going to make a difference here, because you already handed him your ID. Where it might make a difference is internal security camera footage: if you let your significant other live with you without paying rent, the landlord will know because her face will be recognized. If you sublet without notifying the landlord, he'll know. If you're running a flophouse or drug den, he'll know. But he already knew who you were before you signed a lease, because ID is more than a face.
This is only true for commercial flights. If you charter a plane you can be as anonymous as you like.
> But he already knew who you were before you signed a lease
Add a single third party, like the police to this mix, and the problem should become apparent. Whether or not my landlord has access to this information is one problem, who they can share it and how they share it is another.
My uncle serviced turbines for power plants. Power plants are often in the back of nowhere. He travelled with a few thousand dollars and a revolver into the 1970s.