They pose a threat to the financial stability of the company and a smart prudent business person would do his or her company well to stay clear of potentially litigious customers. This may be a hard pill for manufacturers to swallow, but if cities insist on driving up the cost of doing business to levels that would affect the manufacturers financial solvency, they may have no option than to avoid providing firearms to cities that the cities themselves have declared to be inherently dangerous. Again, this option certainly doesn't solve the financial problem manufacturers will see if judgment is found against them, but it will certainly send a message to the cities. The message is simple. Smart business persons don't do business with entities, government or private, that pose a financial risk to the company.
Manufacturers have options when they are being pushed around by big government.
Especially when big government is also your customer. If nothing else, just add the litigation cost and potential judgments onto all cities, counties and state entities requesting bids. You can be certain that something will happen. If city politicians wish to play hardball for the purpose of furthering their own political career, they should be prepared to pay the price. If gun makers wish to see themselves continuing in business well into the new millennium they better be prepared to play hardball with the cities.