Philip
Unless you describe one of their streaming services, this is not a problem with amazon at all.
If amazon has a product today I can buy it and then I have it regardless if the manufacturer later decides not to sell its products on amazon anymore.
Streaming providers try to give you the illusion you can have everything everywhere anytime you want, while this is not the case at all. On one hand is the technical side, streaming the data over a public network which is by definition a best effort network and therefore unreliable.
And the other thing is the licensing problem, the streaming provider gives you the illusion you can put something on your favorites list and watch it whenever you want, but in reality you are completely on the mercy of the copyright allowing you to access the content tomorrow or next week.
And this is inherently a big problem with SLR, as large amounts of the library the copyright owner is somewhere else, and while you may trust SLR not taking things randomly down, there is no way to trust all the other content providers out there.
