I agree its more plausible but with 21 mil total bitcoins(counting the lost ones and those yet to be mined) the market cap at $100k/BTC would only be $2,100,000,000,000 ($2.1 trillion) Gold's market cap is about $7.8 trillion, so a $100k bitcoin is definitely not out of the question. Thiugh as you said neither is a $100 Bitcoin. Just food for thought. Steem on friend.