NAMM is a way to set up distribution and get your gear heard by industry people and musicians as well. I know trade shows are expensive and distracting, but properly timed they can be an important part of a product or brand launch.
I agree if you make a good product that fills a niche it will sell, but only if enough people hear it in the first place, which isn't happening here.
edited to add: If I was marketing these rigs I'd get a loaner into the hands of Fams. He probably did as much to promote the old Acoustic as anyone in the '70s, and I defy anyone to find another player who used them to better effect. I just found this clip last night (unbelievably good sound quality), and was mesmerized all over again by Aston Barret's '70s tone. He really uses the rig like an instrument, uncanny how balances punch and heavy lows, and just enough articulation to hear how he shapes every note. He doesn't use this rig any more, gets less of a Jamerson like thump these days in exchange for more growl and a bit more articulation, letting better modern FOH do some of the work the old Acoustics did. If the new stuff is as good as promised I'd bet he's be delighted to have a go, he still mentions the Acoustic sound in interviews.
Here is the clip, play it loud through some decent speakers or headphones, and tell me this is not some of the greatest bass playing ever recorded, and one of the tightest bands to ever take a stage. I can't listen to four bars without getting newly schooled in terms of timing, feel, tone, melody, and supporting a vocalist and tying up the instruments. It's also a clue as to why the bass doesn't often lock in with the kick drum in so much reggae- if played properly the bass has as much power as the kick and functions as a bass drum as well:
Sorry for the extreme high-jack, wanted to bring some joy and Acoustic love to an otherwise bleak thread.