Earlier quoted context omitted.
They're arguing that the states are giving away money. What money are they giving away? If Amazon never comes, then there is no Amazon taxes and thus no tax breaks. Right now those towns are starting out at zero. If they are smart, they structure the incentives to make sure they are net positive. If they screw that up, well that's on them.
Why aren't cities and towns already doing this then? Every new business or new resident, of any size or wealth or income, is a potential new "net positive" contributor to their tax base.
In other words, construct a hypothetical move for a hypothetical corporation to some example town, and I'm sure that town could come up with an incentive package that would be beneficial to its citizens in place of having the company not move there. Do you disagree?