For games on Steam and movies basically anywhere, the current system is that after I buy the game/movie, I can watch/play it for as long as I have access to the account. If I lose the account or the service shuts down, I'm fucked. That sucks.

For games on GOG or MP3s basically anywhere, the current system is that I buy it and then I can play the game/music forever as long as I don't lose the downloaded files. If I do lose the files, I can still redownload them as long as the service is still operating and I still have access to the account.

The second system seems fine to me.