No, it's not a myth if you just started moving production here....perhaps in time it could work out. We'll see if brexit works first, eh?
As far as is possible avoiding Far Eastern manufacture pays off. Of the 54 loudspeaker drivers in use in this home 48 were made in Europe or the US. Only 6 were made in the Far East. Of the two sets of speakers I have not in use none of the 14 drivers were made in the Far East.
All the crossovers were designed and made by me in the US, and sourced from components made in the USA or Europe.
Which gets me to the next point. If you are worried about the cost of your speakers, especially subs, then design and build them yourselves.
There is absolutely no need to buy a sub from SVS, HSU etc. no matter that they are good. You can do better. Designing a really good sub is not rocket science and actually pretty straightforward. If you don't have wood shop, you can now find a C & C cabinet maker who will build you well crafted cabinets for very reasonable money.
You can power it with a plate amp, or external amp. You will come out many dollars ahead, and built in the USA, I suspect except for the amp unfortunately, unless you go vintage, but that would be cost you, as above.
Designing the other speakers is a little mow tricky, but most of you cold master it, and have far better speakers, than you have now at less cost.
May be these price rises will be just the incentive many of you need to start designing your own speaker systems.
Not only that you can build more novel designs. You can download a transmission line design program from my website for free. That is the best TL design program available. You will need a crossover modelling program, but that will still not break the bank.
Keeping speaker cost reasonable is in your hands if you think about it. The majority of the best speaker drivers, are NOT made in China!