I would guess that the locksmiths have some gatekeeping in just the same way that lawyers and doctors do.
Can you pay for ad placement on Google Maps and answer locksmithing calls? Yes, probably. Can you join all of the professional circles needed to access all the manufacturer data, parts catalogs, etc. ? Not so easily, I'd bet. I would hope that not just anybody can pay a fee to a safe lock company and get the manufacturer's code, for example.
