"Names" can do very well in projects that are well-suited to them.
Shows that are well-crafted with actors who aren't "names" yet who are well-suited to the ensemble can also do well.
If there aren't "names" that are well-suited, a show is better off being the best it can be instead of being the best draw it can be. Audiences can usually smell a pandering namebait, but are drawn like flies to the best fits regardless of name.
There are always exceptions. The best motivation a show can have is to be as good a version of itself as it can. This casting gives me hope for the show, as it'll need the best reviews it can possibly get to fill the Lyric.
Words don't deserve that kind of malarkey. They're innocent, neutral, precise, standing for this, describing that, meaning the other, so if you look after them you can build bridges across incomprehension and chaos. But when they get their corners knocked off, they're no good anymore…I don't think writers are sacred, but words are. They deserve respect. If you get the right ones in the right order, you can nudge the world a little.