That was for the first one though, where all he had was a random persons face, way harder to actually track that person down. For the later ones like the car and even more so the apartment/house it's a much easier case so they might have actually bothered because they can directly link the theft to an actual ID through the plates/address. Even with that the chances they'd bother is medium to low but it's much more likely given the amount of data Mark could hand over.