>>723168638
because the west wore down arcades and battered them to shit then + doing cab conversions for new games until the cabs were so fucked they chucked em into the dump.
seriously. the fact that you can't find a Soul Calibur/Soul edge cab almost anywhere in the west and the documentation about them are so fucking piss poor, is sad.
If you were to find a SC cab here in the west it'll most likely be a mutt cab conversion. almost 0 chance of it being in a native Big Black Namco Cab.
so to answer your question, because the owner of Arcade Cabinets treated cabs like toys/gimmicks and threw em away after a year or two of use. that and poor conditioning