If you can come up with a way to legally stop these people from making reservations, then I'm sure airlines would love to hear from you.
About 15 years ago I visited a major US carrier who was about to implement a program on their reservations system that, working from a list of " must not travel" passengers, would stop a reservation being made.
This was a federal requirement but I do not recall the parameters for getting put on the list. I think it started with drunk on flight and abusive to CC as the common triggers.
Ergo, if they recognise the name and can verify with passport or similar ID number, then they could decline or return the booking.
The program had phone numbers, addresses, credit card# etc. to try and reduce mis matches thus avoid unhappy punters.
I would imagine that this programme has been significantly enhanced in the meanwhile.