I believe that blockchain will impact marketing due to the ease of use and speed of making purchases or providing 'value' to something. With so many competitors entering the environment, we are finding more unique and creative ways to 'pay' in 'social currency'.
For example, there are a number of blockchain companies that are allowing you to tip for good quality content on the web. This will be huge as influencers or content creators will begin to heavily take advantage of the new income stream.
The future is uncertain, which makes it even more interesting for marketers and tech-enthusiasts.