Wilson may have designed the piece and gotten their production run without being careful to make sure they protected their design and the finished pieces were sold to Dayton Audio (quite possibly with cheaper parts… so performance will not match Wilson’s).
FWIW I most often agree with your assessment in the audio realm. You may be the 1st one I would seek advice from in the audio realm. However I have a question concerning the bolded part of the quote. Isn't it true that the Chinese mfgs often copy the patented designs of others ?