"Most cryptocurrencies, despite the market value, will not have any adoption as a method of payment,"
That can be clearly demonstrated to be false as they **already** have adoption as a form of payment.
Paypal now accepts cryptocurrencies at checkout, this covers like 50% of the internet or more right off the bat.
Moreover a ton of companies directly take Cryptocurrencies as payment now:
* Starbucks
* Microsoft
* Overstock
* Subway
* Shopify
* Dish Network
* AT&T
* Burger King (Venezuela)
* KFC (Canada)
* Twitch
* Pizza Hut (Venezuala)
* Miami Dolphins
* Mavricks
* Virgin Galactic
* Norwegian Air
* CheapAir
* NewEgg
The list is rather long I do I really need to continue?