CoinDesk reported:
One of the big lessons from the world of technology is that, over and over again, universal infrastructure is more successful than specialized infrastructure, even when the specialized infrastructure is actually better for a specific job. Before TCP/IP ate the entire world of networks, there used to be specialized networks just for voice calls. They were called circuit-switched networks and they guaranteed the quality of your phone call. No delays, no breaks, no lost packets, just a continuously connected circuit between two phones. By comparison, Voice Over IP phones calls are a huge step backwards in quality, but they now represent more than 99% of all phone calls anyway.