This sounds so unreal that I am having doubts about the veracity of the story and would defer any judgement before hearing from the "other side".
Penny-wise pound-foolish.
"Why are we paying for backups? The database has never failed (yet)"!
One interesting observation I can make: no correlation between excellence in operations and commercial success!
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.