It would be great if adblocking kills those sites. And they will.

It will force new business models, perhaps ones that doesn't just rely on eye-ball/attention seeking for the sake of ad impressions. And once a few pay-sites/subscriptions etc paves the way, it'll be easier to create services online that you can charge for. And now you can focus on making quality, valuable content.

People gladly pay $10 for a beer, but paying the same for some type of quality information service is a ridiculous proposition. The expectation of "free" created by the ad model plays a big part in that.

All pro users adblock. Which means it's slowly but surely on the way to the mainstream.