Certain destinations are targeted by CBSA for various crimes/people. Flights from Jamaica are (often) checked for stowaways, single young women from SE Asia will (often) be more scrutinized upon arrival in YVR, and hippy-looking guys will (often) have their cars searched for drugs at land borders. These may be stereotypes, but it’s just the way border agencies operate. Switzerland’s banking industry might have nothing to do with my flight’s screening, but I don’t think it’s an unreasonable possibility/assumption.