Blockchain may have been around for 7 years, but it's potential has been visible just recently. 2017 was one of the great start and we will follow along :) May be uber or amazon will one day be working on a decentralized platform, who knows? Maybe Elon Musk will see the great future with the blockchain society. 
This is really a game changer!!

I almost think that Elon Musk serves as a sort of antithesis to what blockchain represents.  Not to knock the guy too hard or anything, but Elon Musk is essentially a venture capitalist who doesn't seem like a bad guy.  However, he is still at the head of a hierarchical and centralized organization that has had ongoing conflicts with his workers and labor regarding pay and that.  Blockchain - to me - represents an incredible alternative where rather than a centralized and hierarchical structure for production and development we can see things resemble a more open source protocol like that of linux.  We're talking the collaboration and collective ownership of all people in a project, not a corporation owned by Elon Musk and developed and led to his personal whim.  Decentralization is the name of the game, and sure anyone can participate but nobody owns it.  I think this facilitates far greater outcomes as all the nodes work together rather than for someone.  

(At this point I'll say that Elon Musk is more just a figurehead for my argument and I'm not trying to talk down on him too much).