I like the Economist's solution to the overbooking flights problem:
"pay fair compensation to any volunteers willing to rebook onto a later service. And what counts as fair? Let the market decide. If flyers are not tempted by a carrier’s 1st offer, keep raising it until someone bites. If that price is many times the cost of the original ticket, so be it."
http://www.economist.com/blogs/gulliver/2017/04/when-ticket-not-enough
@ikea_femme Yes This is about bumping up the price in an auction until the bumped passengers are happy. Greedy overbooking airlines pay the price.