Incorrect.
Digital Audio formats like 7.1 or 3D audio are high bandwidth. They send a lot of digital information over to the receiver, and they need to do it at a certain speed.
An optical port is a digital out, but can't carry enough information to support a 7.1 or 3D audio signal going to the receiver.
Its not a "licensed decoder" issue, the cable simply can't carry the signal. It's like asking why you can't get a 1080p signal to your TV using composite or S-video.
As for getting HD audio via the controller's connection that's using Bluetooth not a "stereo jack" to pick up the signal from the Ps4. I don't know a ton about Bluetooth audio but I'm pretty sure it's highly compressed and severely limited compared to what would be comi
Sorry was being unclear. Once the audio is decoded, there's nothing stopping it from being sent over optical, except receivers removing their optical out ports and general CP concerns.
Yes, the bitstream data it too high bitrate (supposedly), but I was thinking more in line after its been decoded.