After all, B6
values it's customers and how would you feel if you were forced to set back all your plans because the airline decided to overbook?
The passenger doesn't seem to mind not showing up for their flight and not bothering to call the airline to tell them that they are not showing up, so why should it be different in reverse.
The reason why the airlines overbook is due to the no show factor of the passengers. Once the aircraft pushes back, those empty seats are revenue that is gone forever.
For those that do not know, the scenario is this:
The aircraft has 100 seats, if the airline sells 100 tickets, then they will get roughly 90 seats with bums in them. There is usually around a 10% no show factor with flights. Therefore the airline sells a few extra seats, thus meaning that they get bums in the seats of the no show passenger whos bum didn't arrive for the flight.
With refundable tickets, the person's bum does not need to show up, and doesn't even need to call (and usually doesn't)
If that passenger does not call, then basically that no show passengers bum has denied the airline the ability to sell the seat, and but has not shown up for the seat that the airline was forced to hold for them.
In the case of the Ryanairs of the word, the reason they do not oversell is that if you pay for the seat, then you either use it, or you lose it, so they do not care if you show up or not as they get the money anyways. With the major carriers, if you don't show up, then they don't get the money and they can't sell the seat.
Therefore overselling is a good idea for the airlines as is protects against this.
Lastly, while occasionally someone gets involuntary bumped, it is extremely rare as for the odd time that people all show up, there is usually a line of people wanting to get a free hotel and free flight vouchers.