Yes, I am aware of that, but Roundabout owns five stages in midtown, with 3 on Broadway, allowing it to have flexibility in mixing rentals and programming; Second Stage has 2 in midtown, one of which is off-Broadway.
Second Stage has explicitly stated the purpose of its Broadway house is to provide a space to develop and stage works by living American writers.
I never said they couldn't or were unable to rent it out. I just don't think they will choose to, particularly not so soon after opening their doors and especially when they have seasonal programming.
"...everyone finally shut up, and the audience could enjoy the beginning of the Anatevka Pogram in peace."