This is why I never 'buy' things online that I want to keep.

Music is a paid subscription through Spotify. If they went down I'd subscribe somewhere-else.

Videos are either through a paid Netflix subscription or rented for £3-ish through XBOX live. I never really watch the same movie twice.

Books I do buy from Kobo, but I wouldn't read the same book twice (unless it's a reference book which I prefer to use paper for), so I don't really care if it's not available after I've read it once.

I've never really got why people spend £15 to 'own' a movie on something like iTunes when the way we consume that stuff is changing so quickly at the moment.