Comer was absolutely offered the role but obviously passed it up. Comer is a name, Erivo is not. Comer made the play, she is the play. It’s likely she’s attached to a role that hasn’t been announced (within the Marvel-verse) which will take up a lot of her time. But let’s not be naive and pretend Comer wasn’t always the planned star of the eventual movie, which was in pre-production before the Broadway run was even announced.
On a slightly different note I always loved that Tess was Northern. It added another layer to the character and now that she’ll likely he a Londoner in the movie it takes away something from her character.
"Charlotte, we're Jewish"