FCC To Repack Channels

[Titan1a]

I question why FM is still using the same technology developed in the '50's. Why not go full digital with 5.1 using frequencies in the 900 Mhz to 1 Ghz range? Why not convert standard AM to DRM (digital radio mondial) reducing channel allocations and providing high fidelity stereo sound? Once you've heard DRM you'd wonder why it isn't in wide use. I'd also increase transmitter power.