I'm surprised the airlines haven't seen this as an itemizable fee opportunity. The cheapest tickets would come with an explicit "buying this class ticket const

I'm surprised the airlines haven't seen this as an itemizable fee opportunity. The cheapest tickets would come with an explicit "buying this class ticket constitutes an explicit agreement to being bumped according to such-and-such-rules if oversold" disclaimer, and then they can list "schedule protection" as a feature of more expensive fare classes. I suspect if they could get away with it, they'd just put everyone's ticket price in a spreadsheet and start bumping from the bottom up.