I have read an interesting article today where they made a point for the fact that ...

... Blockchain was never meant for mass-adoption but rather as a technology that was created as a direct result of the world economic crisis. Nevertheless, I do believe blockchain has the potential to enter the mass market within the next five years. A great example to support my claim is:

• Nike is getting ready to create Blockchain-Enabled Sneakers

In any case, I do believe that Blockchain will have its mass-market breakthrough as soon as people don't realize they are using a blockchain-powered product.

Getting back to my point above, without scalability, this is gonna be a huge challenge - especially since, Blockchain was never meant to be fast and scalable but rather decentral, anonymous, and private (relative to traditional Currencies).