I don't think their demise was the result of training.

It was simply that high-end custom remotes were always a niche market, and if it wasn't already shrinking when they entered the fray, it soon would be. Between Harmony remotes filling the need for most consumers and TV, receiver, or cable remotes incorporating universal features, the niche became "nichier." UEI just decided to leave that lane and stick to the their more profitable products.

I still have not found a handheld remote that I like as well as the Nevo Q50. (Maybe the Savant X2? But that system its own limitations.) Of course it's awfully long in the tooth now....with its relatively low-res screen, lack of IP control, and no support whatsoever, no one should get a used one and newly opt for Nevo. But it's still, IMO, an ideal combination of size, weight, and adequate (but not too many!) buttons, with outstanding programming flexibility. To this day, I can program a Q50 to control virtually any new device I buy.

I really wish there were some equivalent product on the market today.