The simple solution is to not spend your money on their product. Make them rethink their position. While they have the ability to ride it out, it will still hurt their bottom line.
A group of us, about 20, did this to a business in our town. We all got together and lined up outside their door before they opened. The manager looked so happy to see all the customers lined up outside the door. They opened the door and everyone entered in single file. He then told everyone they had to wear a mask, we all turned around and walked out, and went across the street to eat. The next day they decided to eliminate their mask mandate. Could have been a coincidence though.