Copyrights were only intended to be secure for a _limited_ time. Originally 20 years. Konami has been granted at least 2 decades of FBI backed security of their property. I'd say they got a plenty good deal and have nothing to complain about here.
This is a Japanese game and Japan originally had 30 years of copyright. You also can't ignore that the amount of time was extended before the game came out.
This is a Japanese game and Japan originally had 30 years of copyright. You also can't ignore that the amount of time was extended before the game came out.