The moment an airline attendant announces an oversold situation, that announcement kicks off a frantic battle between dopey consumer game theory calculus on the one hand, and rigid airline offer-escalation procedure on the other. This slow, maddeningly predictable war of attrition often results in delays of 45 minutes or more. Those delays cascade into further delays when the flight misses its departure window.
We have a "not enough dopes" problem. There need to be more people willing to take buyouts, and since that's not happening, we can consider pretty much any alternative solutions that make sense.