Any example that this would be useful and most of all actually applicable to real-world? The example of air flight delay is already done (see: https://www.airhelp.com ) with much better payout.

The problem I see on such "presentations" is that they focus on abstract ideas instead of taking a pragmatic approach of how to actually make it usable on a real use-case outside of the experimental playground. Sorry for the rant but it's really disappointing to keep seeing ideas that immediately fall apart when they close to be actually implemented/used.