Selling won't work. If suddenly "many" airlines start selling, the demand won't be that high, and 1) the prices will plummet and 2) there won't be enough buyers

Selling won't work. If suddenly "many" airlines start selling, the demand won't be that high, and 1) the prices will plummet and 2) there won't be enough buyers so some airlines will be severely damaged (anyway)(better fewer than all I guess).