Swiss gun culture has nothing to do with American gun culture. Guns are for hunting and sport that's it.
Essentially no one even thinks of getting a gun for self defence. There also has never been an idea that guns are for defending yourself against your own government here.
Yet every swiss male citizen does military training and is issued a weapon to keep, to use in staying proficient.
There's no need for a military culture, when the government has already mandated it for you.
Not that it isn't popular:
>On September 22, 2013, a referendum that aimed to abolish conscription was held in Switzerland. However, the referendum failed with over 73% of the electorate voting against it, showing strong support for conscription of men in Switzerland.
Military service isn't popular at all, but the majority of people do agree that it's necessary to have a military and they don't want a professional army. So that leaves the current system.
The popular mechanism remains- there's no need to encourage a voluntary interest in military culture and therefore military readiness, when it's already a popular idea to mandate the readiness.
In the absence of that mandate, there would be a vacuum in which citizens suddenly have self-interest in promoting voluntary readiness, which is implemented culturally.
Essentially no one even thinks of getting a gun for self defence. There also has never been an idea that guns are for defending yourself against your own government here.