Could it be for trademark / copyright protection? There was an anti-spam mechanism in the past that worked this way. If you abused the system, they could sue you for millions. No idea if that is still around.
> Could it be for trademark / copyright protection?
Oracle uses this to connect SQL*Plus client to the database. This way, if you make a client without signing one their draconian contracts, they can sue you for infringing the copyrights on the poem.