I really like what Ronnie Barrett has to say here:
Be aware there are more companies that will respect this position. If Hawaii or any state bans the sale of the .50-caliber rifle, we will immediately stop the sale and service of all Barrett products to that state’s government agencies. We will also welcome all small arms manufacturers to take the same action.
He already stopped sales to California as did STI.
I did a similar thing with my restrictions on Modern Ballistics. But I have no way to enforce this when the downloads are free and essentially anonymous. Plus I have only received a couple hundred dollars for all the hundreds of downloads and usage of the product over the years. Any income I lose from adhering to my principles is measured in pennies.
While I greatly admire and encourage the Barrett and STI actions it is not my pocket book that suffers from this. I know other manufactures that simply cannot afford to refuse sales to California because of the volume of business they would lose.