Why is Hollywood trying to push Brie Larson on us?

Are they? I don't really pay attention so I wouldn't know. Hollywood pushing young, upcoming starlets isn't anything new, seems like they're always trying to push the new "It girl" and unforutantely they often don't really seem to go anywhere with their careers. I remember when Hollywood kept pushing Megan Fox and Lindsay Lohan (I have not idea what they've been doing in the last few years).