States license businesses. Yanking a business license could only affect the businesses in that state - which would encourage a business to relocate to a firearms manufacturing friendly state such as Oklahoma. Yanking a federal firearms manufacturing license would require some legal cause to do so and, until Democrat regain control of the House, it is not illegal to refuse to sell to individual state or city agencies, eg, the NYC Police Department.
Will pop-tart and toaster pastries soon refuse to sell to schools that ban "pop-tart guns?" What will the one and only finger manufacturer do with schools that ban finger guns? The old Chinese curse is, "May you live in interesting times." It is not, "May you live in absurd times with crazy people running every conceivable government agency"
Mind you, looking at the list of companies refusing to supply, I see a lot of empty gestures, none appear to be the type of company that would be the first (or even second) port of call for any government dept wanting to buy arms.
I wonder how many companies would have signed up to the list if a substantial part of their business was in supplying arms to government departments?
...even gestures standing on principle make a difference...gotta start somewhere to wake up the people to a greater reality of correct thinking and feeling about who they are and how they fit into society as a whole... it amazes me to look at those, such as the big ammunition companies, and the like, that aren't even looking down the road at what is going to happen if they just keep focused on their bottom line instead of their stand in society...the people will win, over big companies and government, because ultimately it is the people that fuel them. When the people say "thus far and no farther" big companies and government will come to a stand still