And the prospect already got employed at a different business that had an open vacancy, congrats you’ve got NOTHING by hiring in advance and you also wasted the prospects time.
Just because there are other businesses that do this scummy tactic doesn’t mean it’s right or less scummy.
Also, hiring on advance because someone would quit or would be fired so you need to have a roster to replenish them, says A LOT about your business and its climate.