Greetings,
I would like to point out to an currently active panel at the IGF in which Zero rating is a topic of debate. I see WMF being represented there. https://www.streamtext.net/player/carttranscript?event=CFI-RPC5
A stream can be found at http://webcast.igf2014.org.tr/live.ws5.html (hopefully working), the title is "WS208: Net Neutrality, Zero-Rating & Development: What’s the Data?" http://igf2014.sched.org/event/fbbe8b81db6eb26d6179d12c574dd21f#.VAa8UhaR7HA
Mathias