Back in November I took a look at wVoIP to see why it's not working. Also, I linked innovation to the net neutrality debate. In the meantime we've had pretty disruptive products from 3 Group (X-Series) and Vodafone (a string of internet deals). I said that 'there is no net neutrality debate in wireless (yet)'.
Now that could be changing, as RCR, Ars Technica and Dailywireless.org report, referring to a report from Timothy Wu.