Well, if all 4 of them came up with the same strategy at the same time, something is fishes.
Allow me to predict the outcome, in 2 years the case will be settled with the airlines admitting no wrong doing but will agree to fund a settlement of $40 million, of which the lawyers take half in cash and any one who flew during a certain window will receive a voucher for $10 towards their next flight on your choice of these airlines, after filling out a lengthy claim application and waiting yet another year.
You heard it here first!