Why should it? That thing has EGPWS and RNP-AR (or at least a VNAV/FMS) approach. What's the point? Are you going to install traffic lights at every intersection? If there are no other aeroplanes about, we don't need ATC. AIR TRAFFIC CONTROL. This is the 21st century. Operators using on-board technology to reduce their costs/keep their safety levels up. Why would you want to put in a costly 1950s "we're watching over you" ATC system?