Couple record damages X Couple's record damages

The couple sued Express Newspapers and secured unprecedented front-page apologies in 2008 after two of the group's titles ran stories which included the allegation that they had sold their daughter to pay off debts. Describing that as "nothing short of disgusting", Mr McCann said he was amazed that no one at Express Newspapers, which also paid the couple record damages of £550,000, had lost their job.

Não entendi por que não usaram o caso genitivo. Se o possuidor se trata de pessoa, seria perfeitamente viável, senão mais correto, o uso dele.