Honestly, I dont see crypto currencies being adopted for quite a long time. Its difficult to get people on board with the idea, especially in the United States, but I think Blockchain tech altogether will become more prevalent and user friendly is the next couple years.
I see something like the hardware Wild Beast Coin showed off running the Blocknet, which would allow the computer to handle apps and programs it otherwise couldnt. Maybe even Nexus will supply the actual internet connection.
Its still pretty early to tell.
if other crypto can deliver a good blockchain alternative to bitcoin i think it can be adopted, i can't see all the new project built in only one blockchain like on b itcoin, we need more than one, ETH is really good for that because it's a platform that can host what you want, but it's used only for ico scam and stupid smart contract for now