great post .. very relevant and must watch for actual investors of Crypto 
here is my 2 cents ..

Bitcoin is trying to find its fair price... and no one knows its fair value is 400$ or $4000 or $40000  

bitcoin(could be some other crypto .. could be ripple ether etc ) will be dominant universal currency . just like USD was needed when 2 different countries need to trade goods , sooner or later some crypto will replace the USD . i do have several supporting articles and proofs regarding this claim ( which i probably present in a new post.)

At this point no body can honestly say what is the fair value of such a universal currency. the Penetration of Crytocurrency world wide is less than 0.08% at this point we are at 135 billion Market cap even when this penetration increases to 1 percent you can do the maths of the Crypto market cap and accordingly.

More importantly as the video says its the rarity and finite existence of  the currency that imparts more value to it.