Not sure as to who's files you're worried about.Adding my 2 cents.
Should we worry that non-compressed (in a loudness sense, and not in the file size sense) masters get irremediably lost ?
I mean, the moment all those old CDs (approximately pre-loudness war era) get worn out.
How we can guarantee that the original material that was the basis of the dynamic and compressed master will be conserved.
Is the original material always digitized, and then mastered (in a dynamic or compressed way) ?
If their yours, a proper backup procedure is required.
If you mean the record company, they need to do regular backups of archived material to guard against deterioration. Also keeping storage in multiple locations, as the recent fire where so much music was lost forever, should have highlighted.