It is a great shame, as back in the 9-‘s I got into Japanese N gauge when I worked in Japan, I bought tons of the stuff (it was dirt cheap on the exchange rate back then) and the N gauge engines ran sooooo much better than our very best 4mm stuff of the day, to add insult to injury fitting DCC was a simple matter of unclipping the battery/AC boxes under the model and sliding in a decoder, could be done in about a minute or less.
Still have it all, Locos, dmu/emus, wagons……all in a box.