Ubbe this scanner was made for a certain market not a certain market demanding new options.
Yes, but for the added cost you get all the whistlers and bells, trunked, P25, recording to SD card, TG management, closecall/spectrumsweep, database handling, location controlled scanning. If you remove all that functionality and only keep the digital audio stream decoder it should be $100 less than the current price point for these BCDN scanners looking at the developing costs.
You could probably use a $50 Raspberry Pi3+ to decode DMR and NXDN as well as P25 audio data streams and put in a BCT15x to mute the audio from the scanner when the digital formats are decoded and instead output the decoded audio from the Pi to pretty much equal what Uniden have done.
Lets see how popular these scanners will be. I guess that most railroad entusiasts are using much better professional radios as they only need simple conventional digital decoding. That frequency band are extremely interference prone from other transmitter like those powerful NOAA stations, so professional radios are probably the way to go and usually costs less on Ebay than Unidens scanners.
/Ubbe