I would expect it be nationwide Lox, but there may be factors I am unaware of.

Why are you and Jim OBSESSED with the explanation.
The explanation is unknowable.
I can not know what it is.
There has only been one proposed, and it does seem plausible, and the proponents are certainly credible.
Even Jim says he can not be certain it is wrong.
None of us can be certain, and you can not say it is mine.

My case is just the over-rep.