Just as I thought. What you initially stated is patently false: "Well, 20% of your funds bought into it. The other 80% goes to capitalising the balance sheet of Bitcoin Suisse AG of which you receive no share, at least as far as I understand. Happy to be corrected on that if wrong."
It isn't false.
Money doesn't just disappear into thin air. It's "owned" at all times. If you currently own 20% of the book value of your investment, then somebody else "owns" the other 80%. It is therefore currently sitting on the balance sheet of a private corporate entity which I presume to be the ICO issuer. I'm also assuming it's manifesting as an asset, not a liability, otherwise you'd be waving share certificates at me in your response instead of empty rebuttals.
I am not going to repeat myself. Folks can read and make up their own minds.