I could be wrong about this, but cartridges would fall under the same laws as other software. Otherwise, you can legally make a backup of said software for your own personal archives.

It's the same reason why NO-CD cracks are legal. They allow you to play off of a backup of your original. You're not breaking copyright laws if you have already purchased the software and you're only making a backup of it.

This even applies to the actual OS roms. You should own an Amiga if you are using the Kickstart Roms.

slaapliedje