What you are saying is so true.
I remember hearing Michael Feinstein say that, while he was working for Ira Gershwin, he found a TRUNK FULL of unpublished songs by George and Ira Gershwin. Even with his influence, Feinstein could not get a single music publisher to publish the songs. They said that nobody wanted to hear that old stuff.
They were wrong. Quite a few of us out here would. Surely enough to make a pretty good profit. They really should release it. They might be real surprised. I wonder what they did with them?