Sony is obviously the villain here (and pretty much always) but I think this points to an unsolved problem with our model of digital ownership: it's based on the media company providing a service...forever? People in this thread are saying customers should get refunds and I disagree - customers should get video files!
We need a model of digital ownership that does not involve the media owner forever delivering that media on demand. Doing away with that requirement would be good for all involved. Sony has been a bad actor here and deserves every possible sorrow - and also I would like a model that retains the balance of physical media: companies give you a copy that works 'til it wears out and it's your job to keep it in working condition.
This is how it now works with music, I believe. Apple, Amazon, Bandcamp, etc. all sell you access to DRM-free files along with the ability to download or stream them in perpetuity.