Earlier quoted context omitted.
I can offer a counterexample. In the city I live in, there have been several major tech companies that were given enormous tax breaks and other gifts in exchange for moving in. They'd move in, build their buildings and factories, and everything would look rosy for 3-5 years. Then they'd cut and run, leaving the city worse off than if it had never done the deal in the first place.
Yup, goes both ways. Assuming the companies promised more and underdelivered, your city's economic council should have written the contract-break into the contract. Or assuming the companies didn't promise that much, your city seems to either have done a deal aware of the potential of negative outcome (and accepted it) or did not do due diligence. But it doesn't discount the idea of economic incentives as a whole due…
I never said it did.
However, if you really need to make a contract iron-clad in order to protect yourself (and good luck with that!), that's a very strong indication that the entity you're dealing with is untrustworthy and you shouldn't be getting into bed with them in the first place.
The problem with most major corporations (and particularly major tech companies these days) is that they are not trustworthy actors.