They did this with “plays for sure” DRM protected music files too, way, way back. Never bought content of any kind from them after that and then killing Windows LIVE.
Just assume everything from them has a “destroy after” date set in the near future.
When the scores are settled sure, doesn’t mean there’s not mechanisms in any particular country that make this harder. Work two Jobs in the UK without carefully sorting PAYE and one of those will be collected at 40% emergency rates. You get it back eventually, but if you are paying transport, meals and other expenses to attend the second job I can see how it could get close to nothing. You get most of it back later, but that doesn’t help marginalized people trying to earn extra right now.
Syncthing can easily be set to retain the last n copies. And you only need one or two to protect against corruption because you aren’t editing a corrupted file. Likewise a lot of the KeepassX clients can snapshot periodically too. Been doing this for years with no issues over Linux/Win/iOS and Android.