I don't worry so much about walled gardens as long as I can make backups to Ogg Vorbis (etc.) formats from iTunes purchases.
I am a happy customer of Amazon but I make permanent copies in open formats of a small percentage of Kindle books I buy that I might want in 10 years.
I have a lot of family and friends who are not techies. I advise them (and help) to save stuff they buy.
I don't worry so much about walled gardens as long as I can make backups to Ogg Vorbis (etc.) formats from iTunes purchases.
I am a happy customer of Amazon but I make permanent copies in open formats of a small percentage of Kindle books I buy that I might want in 10 years.
I have a lot of family and friends who are not techies. I advise them (and help) to save stuff they buy.