J. Michael Straczynski posted this on Facebook:
Well, isn't this interesting: in the comments section of an article located on io9 at http://io9.com/5985727/the-strange-s...n-of-babylon-5 , a guy named Steven Hopstaken, who can be confirmed as having worked for WB TV, wrote the following:
"I was working at Warner Bros. in the publicity department when Warner Bros. and Paramount were preparing to launch a joint network. Warner Bros. already decided to buy Babylon 5 for their adhoc PTEN network (a group of independent stations that agreed to show Warner Bros. shows in prime time.)
Paramount and Warner Bros. both agreed that Deepspace 9 would be the show that would launch the new network and there wouldn't be room for two "space" shows on the network. I was told they purposely took what they liked from the B5 script and put it in the DS9 script. In fact, there was talk of leaving the B5 script in tact and just setting it the Star Trek universe. I had to keep rewriting press release drafts while they were trying to make the final decision.
But then, suddenly, Paramount decided to launch a new network on their own and screwed Warner Bros. over. That sent Warner Bros. scrambling to create their own network; grabbing up any station not already committed to Paramount and getting WGN to show the WB network on cable."