Why bother with the warning? If the site wants to monetize through subscriptions, put up a pay-wall. If it wants to distribute content freely and monetize through other means (ads, a paid premium section, etc), then do so. Threatening or attempting to guilt potential customers to subscribe is just childish.

How can a publication afford to charge its customers for online news content? Provide something people actually want. Case in point: http://www.theatlantic.com/magazine/archive/2009/07/the-news...