On the topic of a Cosmere Cinematic Universe

So I’ve been thinking about some that no one has brought up. If Mistborn is a movie series and so is the rest of the Cosmere, but Stormlight is a TV series (the only way it could be adapted IMO) then that’s like Marvel making Avengers or Captain America or Iron Man into a Netflix original show that is aside from the main movies. I’ve always worried about the marketing behind this. Thoughts?