said by PlusOne :A very good read and one that really explains why settlement free peering is dying.
An outdated read at best.
Since that article was published (2011), there has been a growth of IXPs around the country that help facilitate settlement-free peering with numerous networks.
While settlement-free may be dying with a select few networks, there is a large volume of ISPs and CDNs that find it rather efficient (and logical) to arrange settlement-free peering.
It just so happens that a large number of networks (albeit not as large as the networks in the news most often) put greed aside and instead focus on peering arrangements that better their networks and benefit their end users (end users who influence the profits of the said networks).
There's a holistic way of running a business and then there's the greed-fueled way. No surprise the extremely varying customer satisfaction levels when comparing the two models.