now think for a minute how much would 10millions coins (all the bitcoin) go for on this market
100million, or 1 billion?

There is no such thing as buying the whole market. Nobody has that much money because the price will just go up infinitely. I certainly wouldn't be selling all my coins no matter what the price is and I think that there would be others who would keep some as well.
As bearish as I am and remain, I've still got a nice stash of bitcoins in offline storage that intend to keep forever, even though recent price movements have been tempting me to sell.