I just think it is hard to wrap our heads about what $100 billion means - if every living human handed over $10 to me, I'd still be $20 billion short....
So I agree, DC is probably the WB's most evergreen property that they own outright, with Harry Potter close behind (but the characters are ultimately not owned by them), and maybe Looney Tunes if they could market that correctly.
I feel like this is going to be AOL/Time Warner levels of overspend. Disney is valued at just under $200 Billion based on market cap, but they own - their animated films and characters, Star Wars, Marvel, Pixar, Muppets, theme parks, cruise line, ESPN, ABC, 20th Century Fox, etc., and Disney's annual revenue is more than what Netflix and WB pull in combined.