I believe successful use cases will act as catalyst for the growth of the technology. Although there have been various good niche examples in the fields of supply chain tracking, ownership tracking, international trade finance, there has not been yet a use case which has caught the attention and the imagination of the general public. As soon as it happens, the adoption will speed up. Otherwise the growth will be slower and "organic" and will go through many parallel experiments which will validate various competing Distributed Ledger technologies. I am currently involved in various blockchain projects and I can see a keen interest by business people, however the lack of landmark implementations and the crypto crash of 2018 have made non-technical people a bit more wary than they were in 2017. Hopefully, with the new crypto rally the industry will regain some confidence in the technology.
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Building a Better World in your Backyard by Paul Wheaton and Shawn Klassen-Koop