Why dont many (if any) programs send out content updates to surfers?

With the proliferation of 'free' in the industry right now, in order to maintain an edge, shouldnt programs be working on leveraging the other benefits of their sites, like constant updates, immediate access, etc, in the surfers mind to educate them that 'free' isnt always a good thing?

Your thoughts, do you think emailing members with content updates would be a good or a bad feature for paysite owners?

Regards,

Lee