Building on what Steve said, the molds are too valuable to collect dust. You'll notice that many of the "fallen flag" manufacturers' molds are still in production by one manufacturer or another. A manufacturer with existing molds can almost print money with them. They've got no tooling costs to amortize, so their only expense is the plastic they shoot through, as well as labor and packaging. Not a bad way to do business so long as people are still buying. Note also that while Marklin as yet has no distribution plans in North America, they do have a solid network in Europe, and have not said they won't be producing US prototypes for that market. They're listing the Minnesota ore jimmies for release this year (though lettered for DB). Coincidentally, Piko is offering the same thing, evidently using MDC's old ore jimmy molds. Go figure...
Later,
K