wXR, there is a lot of good info on ownership in that podcast. He seems really level headed.
Cloanto claims to own the copyright to everything up through 1993. 1994 and newer is not owned by them.
They also seem open to the idea of open source so that it isn't lost.
I don't know about anyone else, but an open source version of what we had in 1993 would still be worth while.
Everything after that could be rebuilt if people could legally get at the source.