In the summer of 2018, I thought that the Cryptocurrency would be trampling now .... Venezuela will sell oil for crypto. And in fact it turned out that no country is ready to introduce cryptocurrency into the economy, since do not understand what to do with it.
Another thing is when we take a separate sphere: programmers and geeks of their work, they are in the subject and understand what to do.
Of course, it is much easier to implement (integrate) blockchain technologies in a single industry than to implement such projects in the global economy. Let us hope that this undertaking will be successful!