A day may come where it is the only option. In which case, personally, I will still advocate for not getting in the box. If they're going to hold "music" and "movies" hostage tell them to go fuck themselves. It's your money they're using to lock you in. And the day that I have nothing left that can play MP3 files is too far in the future to be sure about anyhow.
If you're really concerned that that is a likely future, you need to be joining with me now, not trying to discourage me about the hopelessness of the task. The only reason it's hopeless is your apparent willingness to pay other people to lock you in. If you don't accept that bargain, you won't be locked in.
Further helping is that these closed ecosystems tend to collapse anyhow. If you're locked in, why spend money on giving you good content? Even if they are appealing today, they won't be tomorrow.