European countries immigration systems are not equal. Just getting a job in Switzerland if you are foreigner is considerably harder. The employer has to demonstrate that no native would be able to your job. The government will send him unemployed locals and employer has to write what exactly disqualified that local. It is considerable hustle, so most of them do not bother.

Plus, as a foreigner in Switzerland, you will always be looked down upon. It is hard to get accepted as equal.