Excellent reading! Following the example of the Starbucks or candy crush points, if they were tokenized on the blockchain (let's say an erc-20 token or something like that) you could pretty much pay in Starbucks with your candy crush points.

I believe in the future there will be a lot of income streams based on user actions, whether is liking a post on something like Steem or playing videogames, let's see how much time it takes to get there...