In terms of Icons, Jack sells better/as good as Mary and they don't have to share the profits with anyone who frankly didn't do anything to deserve it. In terms of IPs, if you have the choice between Chucky or Bloody Mary to throw on merch and ads, you go with Chucky cause media properties move tickets faster than urban legends like Mary would.Me and @Legacy had a whole discussion over why they wouldn’t bring her back. Either it’s because Universal doesn’t like the idea of an urban legend being copyrighted (I myself don’t have a problem with it; it’s not like Bobbie Weiner’s copyrighting Day of the Dead), the poor attendance rate of 2008 (especially considering the success of Carnival of Carnage), or of a certain employee (Roddy) who did some… not so great stuff and that man was heavily involved with the Bloody Mary icon.
I think judging by how they still use other Roddy creations and aren't afraid to throw Bloody Mary a bone to some extent given the house cameo, I don't think he has anything to do with it. It's purely business.