Are there any existing bitcoin exchanges which have issued shares? I'm not aware of any myself, but please let me know if there are.
There are, increase your awareness.
When the business plan releases, the IPO structure will be made clear.
I'd be tempted to say it's the other way around, "when the IPO structure is released your business plan will be clear". That'd be assuming dishonesty though, let's not go down this road now.
100% public owned, doesn't have to mean 100% shares are available on IPO. The initial investor has to get some shares, and the rest shares will be sold through two stages, details of which will be release soon.
Well then, it's not 100% public owned. Appears more and more misleading the more we start scratching the surface.
-The creators of the exchange will buy shares on the market like everybody else.
and where will the money go to? I mean who will get the money for the shares? When you buy something from someone there always has to be a paying and receiving party. At least in my book...
and no, it's not a good question.