The cost of living in Switzerland is high, that's true. But in IT the office language is English. And you have to pay your own healthcare insurance but afaik that's the case in most of Europe.

In my experience it is a bit more difficult to find a job here compared to the rest of Europe, and that's because there normally are more candidates for every job offering.

Depends of the country. If you are french, it's quite easy to work there. If you are Estonian, probably less.

There are not part of europe, so they do whatever they want.

Not for a EU citizen with a signed job contract.

Not for most EU citizens.