Cloud Particles

Should a digital copy live forever, eternally sustained in the cloud?  To be sure, everything wears out, even the magical cloud particles.  Our music and videos can have eternal life up to our ability to remember our passwords, remember where to look for the email reminding us of the password hint.  Can I prove that I own this junk?  Can I prove my identity?  Do I need to establish an alternate "media identity"?  Does the notion of permanent ownership erode the value of the art?  Eventually our membership with "the service" will prove intrusive.  My ability to watch and listen to my collection on every street corner and park bench will not liberate me.  Some people might get rich but I don't know why.  Art should not be subservient to convenience.