Just an observation, from across the pond, but I’m starting to form the view that lightweight tools may well be the next big thing. Not, in any way as replacements for existing ones, but rather as additional tools for folks who need to be mobile.
I can think of very few people, say 20 or 30 years ago, who carried a lot of tools with them, but I can think of any number now who work out of backpacks or shoulder bags. Add to that the mobile service techs who want to work from a small vehicle, or the guys who need to travel by air, and it’s getting to be a lot.
Very few manufacturers address this need. Asahi, with their “lightool” range do to a degree

and I will be interested to see where KTC go with their “Next” concept, which I hope will evolve into a complete range

but both makers use conventional materials, and are only slightly lighter than their standard equivalents.
In the meantime, folks buy sets such as the Wera, a fair number of who do so because of the overall light weight, even tough the tiny bit ratchet with adaptor is far from optimum for driving sockets.
I watch events with interest. My only comment to the O.P. is to continue what you are doing. Projects such as this are invariably slow to get moving in the early stages, but provided the product is good (and I think yours probably is) sales will gather momentum as word spreads.
Ignore any negativity. A lot it will come from people who’ve never bought a costly / niche tool in their lives, and what they think doesn’t matter as they are not your customer base.
Keep your quality high, keep your paying customers happy, and all will come good!