It really is a choice between three outcomes. (1) No factory is built, no taxes collected. (2) Factory is built, company pays full sticker price on the taxes. (1) is unappealing because nothing is created. So we arrive at (3), where the company understandably wants to renegotiate the sticker price on the taxes and the taxing body doesn't want to end up in scenario (1), so they come to an agreement somewhere in the middle.
Why is this translated into the company received cash from the taxing entity?
You say "pay me 20% of your 100k job" netting you 19k, I refuse to pay that steep of a fee and counter with "take 10% or nothing" netting you 9k.
I don't believe its fair to say that you have lost 10k if you accept my terms as the alternative is receive nothing. You have increased your revenue by 9 thousand dollars as opposed to earning 0 dollars. The option you proposed is simply not on the table and can't really be considered.