I know my theories are only speculation, but we can't say this is totally impossible. Let's say it is possible but not probable. At least I enjoy telling it.
WotC doesn't need to buy other companies for their IPs but if these are really good and popular (in a no-Western public). And WotC knows a good toy line what becomes a tabletop RPG is perfect for the new teenages who would rather videogames, miniatures and board games. A good hook may be a famous franchise they knew as toys when they still were preteens.
And novels also can make money as media adaptation, for big or little screen. The comingsoon serie based in Magic: the Gathering is only the beginning. Hasbro has got ambitious plans about the movies adaptations of its franchises and let's remember now they have got former Saban's franchises, not only power rangers.
They could use novels and comics like a cheaper version of the pilot episode of new teleseries to test the reaction by public opinion. They would dare to publish more stories set in Ravenloft, someone supernatural romance with some monster girl, but also with a softer tone as R.L.Stine "Goosebumps", PAX serie by Åsa Larsson, Ingela Korsell and Henrik Jonsson, or "Scary Stories to Tell in the Dark".
In the age of the internet streaming services as Netflix there is space for a media product, the hybrid of visual novels+adventure games, the
interactive films as that episode of Black Mirror: Bandersnatch. This format could be perfect for epic gothic adventures in Ravenloft.
Gamma Worlds is also possible as an interactive cartoon in streaming platforms, like the 80s cartoon movie for adults "Heavy Metal" but a "shonen" public. The level of violence wouldn't be very hard, more like "Exo-squad" cartoon.