That's like saying that because the store sold you the belt you're using to beat your children, the owners should break into your house to physically stop you from doing so.
Individuals looking for belts and nation-states looking for networking equipment are not really the same thing… also belts don’t usually include service/maintenance contracts etc, or the ability to be revoked from the public at large (imagine the embarrassment)
It doesn't have to be the same, that's what makes it an analogy. What is the same is the relative relationships between the elements involved. Although, now that you've made me think about it, I guess it's not quite right anyway, because I doubt it's Switzerland selling technology, but Swiss companies. It'd be more correct to say that because you bought a belt from the store, the store-owner's father (as well as some of his neighbors, let's be real) should break into your house to stop you from beating your children with it.
What would prevent gun stores from selling guns to criminals would be the law and the punishments doled out by the government. So if your argument is that Switzerland should punish Swiss companies for dealing with oppressive governments, then yeah, maybe. That's not the topic of discussion, though.
If someone buys a gun in a foreign country, and after returning to his home country he shoots a man, is he subject to the laws of the foreign country? To me that sounds like it would be a breach of the sovereignty of the man's home country. Not that I'm saying this is an apt analogy, but it's certainly closer.
> if your argument is that Switzerland should punish Swiss companies for dealing with oppressive governments
Some countries require an export license for some products and companies might get it to export to friendly countries and not get it for other countries. It's similar to sanctions. Those licenses apply even to some piece of software (spying tools et al.) Companies caught selling without a license are punished.
