Alea
Seems to me that SKS has telegraphed that for years, but few have paid much attention. SKS uses the term SUBSCRIBER MANAGEMENT.
Think what kinds of premium content can be delivered to people who have subscribed. The system allows you be authorized and authenticated to sign onto a server IF YOU'VE PAID a fee as well as to sign on if you've properly met the networks requirements. It would allow consumers to be managed in ways I'm pretty sure exist, but which I can't conceive of. I'm sure the corporations will figure out what sells better to customers who they can authenticate and run against the databases.
The old eamonshute concept of buying a chapter a week or a kid's subscription to a site comes to mind. Granted much of this stuff has been worked out with credit cards security that bypassed Wave, but where there's a tecnology -- there will be niches which will be invented where money can be made.
That is the true genius of not so free markets.