Pretty much no chance.
1st question is "What is in it for an airline" and answer is sweet bugger all.
The claim culture would have someone buying these and then going to court.
The claim would be that the airline did not honour their tickets so the lovely holiday to Disneyworld, with great Aunt Jemima, in a wheelchair, plus 4 kids including a nursing baby, was ruined because the airline refused to fly the 7 of them plus 150kgs of luggage for the £1000 they paid for their unconfirmed standby tickets. The claimants will state that the terms and conditions were completely unclear, they didn't read them and would go to court on basis of no win no fee.
Headline will be "Airline abandoned family of 7 including disabled woman and kids at airport" and all the media would be offering to pay for stories.
In Airlines case, why bother as there is no positive return.