Well, for one, David Zaslov has kind of already answered this question, by effectively killing off and cutting (down) a bajillion projects. And any movie with money potential gets into theaters. Things like A Christmas Story Story, which literally spawned out of nowhere, aren't exactly big enough to get butts in seats. Evil Dead Rise on the other hand, will. A recognizable name, horror and blood hounds will love it, and it's a horror movie, so it doesn't cost a whole lot. And given it was switched from a HBO Max release to theaters, presumably due to highly positive results from test screenings, you could see it be a hit.

DC is already a mixed bag (Black Adam's numbers have been less than impressive), but given two sequels to two successful DC movies, those two will be easy cash. (The Flash, in spite of Zaslov and test audiences being highly positive, will either be a hit or historical flop because of you know why.)