Money is Money - every actor has to pay his / her bills.
Also I think it has to be pointed out that Susan Egan, while very well known among Disney music fans, is everything but a big star.
Nowadays a "big Broadway star" is really, really rare - there are TV and movie stars who make a beeline to the Broadway for a short term engagement, yes, but a true nation wide star from Broadway? Not really in sight.
There are some Broadway actors / actresses who have nation-wide success on the screen and there are those which are stars on Broadway among the Broaway crowd. But even so I like her work I would not qualify Susan Egan as either. Besides in Beauty and the Beast she has not yet really convinced the crowds on Broaway - but that is necessary to be called a star. Till you manage that you are, unfortunately, at best only a great, outstanding performer struggling to pay the bills.
Yours
Dirk