Seven years after the dot-com bubble burst and the Internet infrastructure is relatively more mature compared to the mobile network infrastructure. The evolution of technologies starts with the internet landscape and then spills over to the wireless networks as "ported" wireless apps. While "hot" technologies like social networks thrive on massive buildup of users before it can be monetized, technologies like email and SMS started from the academic/business/government circles before it went mainstream with the consumer market. Email, for example, started as a way for multiple users of  time-sharing mainframe computer to communicate while SMS "started as a message service, allowing operators to inform all their own customers about things such as problems with the network", according to textually.org.

If you will notice, it goes from development, then inter-operability or interconnection. No technology is an island. It must interoperate with others by bridging their legal, monetization, revenue-sharing, usability and scalability issues.

Right now, the infrastructure is still nascent. If SMS took 15 years with the introduction of SMSC to become the global killer app that it is today, let’s say it will take roughly the same span of time (or may be less) for the high-speed wireless apps of tomorrow to become as successful as SMS. Until then, let’s just wait and let the piecemeal solutions pass as they are being introduced by the players in the wireless ecosystem. The "tipping point" of killer wireless apps is yet to come until the global  "wireless data" highway is complete.