Now kindly provide a quote out of that source that even remotely states or convey the idea that "80% goes to capitalising the balance sheet of Bitcoin Suisse AG of which you receive no share."
Maybe you should be looking into that since you invested. It's on someone's balance sheet and it sure isn't yours

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."