The Scene group KOTF (Knights Of The Fallen) have released several ps4 games (links are just the NFO, the info of the release) along with instructions on how to play them.
What this means is that now you can play backups of your games (or play games that you don't own), however, there's a very big hurdle. As can be read in the NFO your console needs to be on firmware 1.76 to be able to do anything, for that you need to have bought the ps4 several years back and refrained from updating it as said updated was released on August 2014. The other problem is related with the first, new games require higher firmware, that means the game pool you'd be able to access doesn't include games released in the last ~3 years.
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No system is unbreakable, you need the right hands and enough time to work on it. And this development might spark a bigger interest in the scene and further news might pop up as a result in the future.