I guess the blockchain will spread much quicker than we expect. At the moment I quite often hear the blockchain topic being discussed on mainstream media, whether radio or TV. I am myself not using these mediums, but funnily enough I show up at the right time in the right place where some of those channels are turned on, and suddenly this topic comes up. Or sometimes just the word. Yet all talked about it as being revolutionary and 'the future'. So basically the blockchain is already finding vogue among the mainstream in a very positive way! :)