The first part of the Quartz article is the usual complaint about Whatsapp getting a free ride. While they may be eating into the messaging and voice revenues of mobile networks, OTTs like Whatsapp aren’t completely bad for business. They can help fuel data consumption—a growing revenue stream for network operators if exploited well. South Africa’s third largest network, with 19.6 million subscribers by the end of 2014, saw an opportunity a year ago by zero-rating Whatsapp on its network for close to a year.