The "iPhoning" of Korea

Jasper Kim had an excellent short article in the Wall Street Journal a few days ago, entitled "The iPhoning of Korea."   It reiterates a number of points made in earlier posts here, and adds a new one.  According to the article, mobile service providers balked at providing free WiFi service for the iPhone, something that had become commonplace elsewhere in the world.  Eventually, as we all know, KT provided free WiFi service to iPhone owners through its nationwide Nespot network.  I'd be pleased if any readers can elaborate on this point.  Did the issue of free WiFi further delay the iPhone's entry into the Korean market, after WIPI issue was taken care of?