I agree with golbinau. We've been crazy spoiled with labels like ghostlight, P.S. Classics, Jay, Kritzerland, etc. picking up almost every show on Broadway whether it was a hit or a flop.
But the truth is the demand for these recordings is very limited and I'm sure the profit margin on some of the releases isn't very high.
I'm greatful for any recording that preserves an original cast for posterity.
....but the world goes 'round