And worse, they had a backup service, and then dropped it to save money.
"Why are we paying for backups? The database has never failed (yet)"!
Penny-wise pound-foolish.
But if no one is watching to ensure the move was finished (or they got distracted), then something many people treat as set-it-and-forget-it could easily get into that state.
One interesting observation I can make: no correlation between excellence in operations and commercial success!