Because with proven concepts the swiss intelligence services would be locked out. And now people have to trust their claims of “swiss privacy laws” (who are shit - the worst in Central Europe. Switzerland had multiple scandals, from a system that had intelligence files on a large percentage of their “unreliable” citizens as part of the “Fichenskandal” to them recently admitting that most internet traffic within and all traffic leaving and entering Switzerland is monitored by the swiss intelligence services - without so much as a judges permit). Yeah, I know, they are audited…But since Snowden we all know how much that is worth.