Retail employees do more than checkout. You’ll still need them to stock, do customer support, clean, and more.
I am not saying RFID will eliminate employees in retail , just that there is cost to not having RFID too, we should only see the diff as the cost of the tech not absolute numbers
Why is that relevant?
If 5 employees spend 20% of their combined time on checkout, and you get rid of checkout, you can go down to 4 employees, can't you? Why does the exact distribution matter? You'll still have a healthy variety of tasks to spread among those employees.