The ad-supported business model might not work for everyone. That's fine, there are plenty of other possibilities -- subscriptions, micropayments, tipjars, daypasses, you name it. It's not obvious that any one business model will work for all sites, or even that any one site needs to stick to a single business model. It's the Cambrian Explosion all over again! The outcome is probably unimaginable right now, and when it's over we'll have all kinds of weird dead fauna to look at. The last thing you want to do is stick to a single model because it worked in the dead-tree era -- that way lies extinction for sure. Press on!