> I find the behavior of the software manufacturer rude and unacceptable.
I've seen many photographers who ended up with the exact same behaviour because any other is a good way to get steamrolled. Infringement = infringement invoice, period, end of the story.
> 30kCHF is an outrageous claim.
Depending how the original license cost (for a roaming license too) is, not necessarily. An infringement invoice must be significantly higher than a regular license or there's no point to getting a license, you can just wait to be caught. Considering the kind of products we're talking about, licenses are probably in the 5k~10k range. A 3~5x infringement surcharge isn't outrageous.
> On the other hand, AllSIM didn't suffer any damages.
Somebody used their product unlicensed in a way not allowed by the licenses they had access to, that sounds like damages.
> Also, there are probably not that many potential customers in the world for AllSIM(TM).
On the other hand, there probably aren't that many potential replacements in the world for AllSIM.
> Maybe CERN should have used their power to make clear that this was the act of a naive student, and that a ridiculous fine could seriously impede the future business relation with CERN…
Why? CERN suffered no damages, they forwarded the invoice to the student.