I'm willing to extract textures from Space channel 5 part 2 and the thing I came across in the PS2 version was the archives for textures
Normally Dreamcast uses .PVM, the PS2 version however uses .PTM, I couldn't find a tool that extracts .PTM...
You can buy drm free games / music / ebooks, and if you keep backups of your data (like documents and family photos etc), then you shouldn't lose the game. but with a disk, your toddler could put it in the toaster and there goes your $60