As some producer a while back said, when you are spending 8-12 mil on a show, what's another 250-500k for an album? It could be self-produced and distributed by some company. This would take the onus off of trying to sell album rights and the show would retain creative control.
Remember that the authors will make the most out of a show like Dracula, as they did out of Jekyll and Hyde, since they will get royalties out of every production regardless of whether it makes money or not. This includes a tour, regional productions, foreign productions, stock and eventually Little Theatre runs.
Having a recording (any recording) of the score makes reading the show easier for people who are not familiar with the show. In short a cheap recording will benefit the authors and perhaps some other royalty recipients.
It screws the actors and the already screwed producers.
Ain't show biz grand?
"If my life weren't funny, it would just be true. And that would be unacceptable."
--Carrie Fisher