That's mostly because Konami (#FucKonami, BTW) lost the source-code for the final release and only had a "beta" copy, from what I remember.
Japan (and America, I guess) in the 90's-00's would totally toss out hardware and drives without archiving. It's why the "Archiving of Video Games" is so important but getting stomped on by EULA's and DRM.
That's mostly because Konami (#FucKonami, BTW) lost the source-code for the final release and only had a "beta" copy, from what I remember.
Japan (and America, I guess) in the 90's-00's would totally toss out hardware and drives without archiving. It's why the "Archiving of Video Games" is so important but getting stomped on by EULA's and DRM.