Interesting question. I am assuming that if I buy a firestick, I can use it for as long as I like (IE until the technology becomes redundant) It is an android device with limited apps in the Amazon app store. You can load additional apps like Kodi, which I use to stream videos from my PC. If you want to watch any of the Amazon content such as Prime or Amazon Music, you can only use that as long as you continue to pay your subscription. I have a current subscription, but I assume that if I do not continue with that subscription, I can continue to use the android device (firestick) as long as I like.