Are you specifically talking about mixers or thinking about all kinds of gear?
At present there are things like controllers which you can buy custom made / customer configured on etsy or elsewhere that you can specify things like buttons, sliders or potentiometers and the arrangement, but a lot of equipment which is reliant on the UI remains locked behind development and custom software.
I think with something like a controller or a mixer which unless it has a special feature set is mostly just parts and plumbing, there’s a distinct possibility that self-designed or made to order will become more accessible to the consumer.
This may require some integration of AI into the design program interface in order to allow a normal person to access and create that which currently takes experience and a specific skillset to achieve, but even currently for people who have experience or skills a lot of tools are already available online to design 3d enclosures, have face panels cut, custom PCB or even pre-built circuit boards delivered to your door in a matter of days.
Whether these products will have any escalated value (of use) beyond that which is made for mass consumption is debatable. A one-off product will never be less expensive cost wise than something prefab, and I’d like to think that 8 times out of 10 a person with professional design experience who is acutely aware of certain pitfalls to watch out for will design a better specialized product than someone who hasn’t already experimented with ideas in the past on someone else’s coin.
As far as how close we are to it? I mean you can do it now to a certain degree but it’s potentially going to be quite costly. How close are we to it being affordable? Technology is moving at an astonishing rate, something that in my mind seems 25 years away could be like 5 years away or less. I think this will come down to actual demand and whether or not someone figures out how they can operate such a business with a low enough overhead to make a significant profit.
In reality, no one is going to set this type of business up out of the goodness of their heart, they’re going to aim to make money off it. To be affordable, the products would probably be made and assembled by the same underpaid skilled workforce in China who currently works for say, behringer, because anything else just won’t have any profit attached at a price tag that we as average consumers would call relatively reasonable.
I didn’t mean to have so many thoughts on this, but I’d personally love to be able to design and have products made on demand so it’s something I’ve thought a little bit about before.