I don't know if this is true of the Dreamcast era Sega but it is for the Saturn era. They lost source code for some of their games. A lot of Dreamcast games wer

I don't know if this is true of the Dreamcast era Sega but it is for the Saturn era. They lost source code for some of their games. A lot of Dreamcast games were ported to other console when the Dreamcast died