People forget, you never owned the games you bought, physical cartridge or not. The instruction booklets state that you bought a license. It's the bullshit argument console manufacturers use/used to go after emulation developers.
Having a copy of the game that can't be fucked with by errant updates to the game files or by updates to the device you use to run it is a wonderful thing, but don't lie to yourselves about the legality of ownership. That's been a busted clusterfuck for longer than most users on here have been alive.