I think that if this ever happened, an alternative
might very well be
to just pool together as a bunch of hobbyists and order paper tapes
custom-made? I think paper mills have catered to smaller markets in
the past...
Someone from the CHM PDP-1 restoration team contacted Western Numerical
Control about having at batch of fanfold made. It was going to be on the
order of several thousand dollars to have the paper maker WNC knows
fire up the machine to do it.
At $20/box on eBay, it may be worth doing..