In the 1990s, when Smith and Wesson made a deal with the Clinton Administration, gun buyers and sellers did something similar.

We stopped buying Smith and Wesson firearms and their profits dropped like a stone. They thought that the increased business from the Federal government would make up for lost civilian sales but those Federal sales weren't what they were expecting and the civilian boycott was bigger than they expected.

It got so bad for the company that the owners had to sell it to get out from under the deal.

Bingo, thanks for explaining well. This will work if the switching costs between vendors is relatively low (like with guns); if not, the boycott would be harder, but likely sustainable for a limited amount of time, which would still extract a toll from whatever manufacturer was chosen.