It's just not true though. You could use the same argument after he'd already subscribed to four publications: should the Vancouver Sun not have bothered trying to get him to subscribe because he's already done some subscribing and is obviously "not gonna do any more"? Of course not. He really was their target market. And I'd be willing to bet within a year he'll have subscribed to content from another publisher, possibly at the expense of one of the existing ones.