Where does this number come from? Easy, most long term Bitcoin skeptics have now done a complete 180 and claim you should invest 1% "just in case". Even hardcore Zerohedge readers who only believe in gold and aren't into Bitcoin at all say this. People with low net worths, or not of the investment class, will be more hesitant to do such a move, but many also will. For the sake of simple calculation, we will say that only millionaires would be willing to risk that type of cash, 1% of their net worth, or $10,000.
Since there are 16,300,000 millionaires on earth, 16,300,000 x $10,000 =
$163,000,000,000 market cap$163,000,000,000 divided by 21,000,000 Bitcoins =
$7761 coinsMarket cap doesn't actually work like this though, so the price would likely be far higher with that much real cash going in.
This also assumes they only have one million dollars when these 16.3 million people also include multi-millionaires and billionaires, so they would be investing more than $10,000 if they did 1% of their wealth. If you don't low ball how market cap works, or low ball the amount of money these 16.3 million people have, the real value would probably reach something like $100k-500k+ while acting soley as something rich people hedge 1% of their wealth in without the mainstream even using or touching Bitcoin.
Much stranger things have happened before:
http://www.zerohedge.com/news/2014-07-10/pure-madness-revenueless-assetless-sync-continues-over-5bn-now-bigger-cablevision-an