There will always be a place for advertisements, the methodology needs to change. Companies like "doubleclick.net" are dead, they just don't know it yet.

Direct advertising still works. When the ads are sourced from the same domain as the content, blocking them is essentially impossible. This means a bit more work on the part of content providers, they have to solicit advertisement revenue directly, but many of those companies have been doing that for decades (newspapers). Shouldn't be too difficult.

That sort of advertising is less offensive as well, because it's more likely to be relevant and safe.