Most browser vendors do business in the EU. And governments in general have a right to set standards for products and services. In some sense, Firefox could be

Most browser vendors do business in the EU. And governments in general have a right to set standards for products and services. In some sense, Firefox could be an exception, because Mozilla doesn't seem to do a lot of advertising in the EU. It is not like Apple, Google, or Microsoft can say: we don't really care about the EU, we just remove the browser from products we distribute (directly or through third parties) in the EU.