Switzerland has a direct democracy. If 100k people sign a petition, an initiative (bill) goes to a popular vote. If this move turns out to be highly unpopular, it may be dismantled by the people.
Some states do have ballot initiatives but obviously those can't override the Constitution. For example, see California Proposition 187 on illegal immigration which was passed by voters in 1994 but then largely struck down in federal court.
And I can’t speak about Switzerland but even state level ballot initiatives can be checked by the courts if they violate some other law.
CA voted to ban gay marriage via ballot initiative, their courts stuck that down.
I don't know enough about how Switzerland is established as a country to talk specifics. I only know that it isn't technically an EU member, but is part of the Schengen zone.
The closest we have in the USA is “Article 5” —- if you can get two-thirds of the state legislatures to ratify an amendment, it becomes part of the constitution, without any federal say in the matter. In
I's worth looking up how it works. There is no "well lets just ignore the people".
https://www.weforum.org/agenda/2017/07/switzerland-direct-de...
We had a vote in 2014 about a very specific way to restrict immigration into Switzerland, it was voted through, but Federal Government wasn't willing to nuke our economic relations with Europe so now if you are advertising for a job in Switzerland you first have to make sure Swiss people don't fulfil your criteria before you hire a foreign person(i.e that is the result of an initiative whose aim was to restrict asylum and Shengen agreement movement).
This specific case of the Credit Suisse doesn't appear (to my as a layman) to be in contention of anything external to CH.