There are both monetary and strategic reasons for global corporations to operate in Europe of course, just as there are with other areas of the world. But that

There are both monetary and strategic reasons for global corporations to operate in Europe of course, just as there are with other areas of the world. But that doesn't mean they should be allowed to do so solely on their own terms. Countries can set the terms they want. That is the meaning of sovereignty. Some of them have rules that constrain their legislature somewhat (a constitution) and some of them try to set rules that at least to some degree conform to the will of the people living there (democracies). These principles have not come about from nothing, so I wouldn't call them arbitrary.