I have seen the pdf letter that was sent out. I talked with one of the dealers I found on an Internet search today and they confirmed the information.
My gut feeling is they over saturated the market with some of their products that they just seemed to refuse to improve over time. Customers like to feel comfortable with a company that is forward thinking and willing to listen to their customers and put that feedback into their product. JPS seemed to just ignore their customers and live on the product they first produced. Just because your parent company was Raytheon, it didn't mean your product was the best. It just showed your marketing and dealer network was better. Time has proven that all this effort didn't pass the test of time.
Having a strong interest in the radio interoperability field, I found that their use of a spoke and hub, multiple gateway type connection was just plain stupid. It required a different IP address of each port on the spoke and hub connection at the master site. Plus if that master gateway went down, the entire network also failed. Not a smart way of providing multiple network gateway connections.
Their gateways were also hardware restricted. If you wanted to change to a different type of radio connection, you not only had to buy a different radio interface cable, you also had to buy a new interface plug in card. This made any radio upgrades an expensive process because of the plug in card replacement requirement.
There are other gateway companies out there that have listened to their customers and produced a well working gateway that can be easily made to work with multiple gateways and not need a ton of different IP addresses at a central point of failure location. The software defined gateways made radio changes much lower in cost than dealing with they way JPS forced you to do an upgrade.
I guess we have seen another company dealing with radios & interfaces that has gone the way of RCA and a number of other companies no longer in business. Times change and customers demand updates and customer care from the companies they deal with. Poor response translates into poor business.