Disney+ is specifically a video streaming service. No comics. So yes, they are going to create a lot of video content, and why MCU shows were cancelled from Netflix.
DCU is not a Disney+ competitor, nor is it trying to be. Disney+ is going after Netflix, Hulu, HBO Max & Amazon Prime.
Disney is really taking money and throwing things against the wall and seeing what sticks. Some of their stuff will likely be good (like Luke Cage & Jessica Jones were on Netflix) some will be OK (Cloak & Dagger for example) some will be awful (the Inhumans comes to mind)
Marvel is by far the biggest film/video franchise they have. So naturally they are going to put a focus there.
DC & Marvel have coexisted for decades and will continue to do so.
What Disney+ is doing is interesting in the steaming space, and maybe I’ll throw over Netflix in favor of Disney+. (The only thing keeping me on Netflix is the CWVERSE SHOWS & Patriot Act.)
What is the right business call for Marvel isn’t the right call for DC. And vice versa. They services aren’t really competitors. Is Disney+ making 22k+ comics available to subscribers? No, you’ve got to pay Disney $8 a month for a subscription to that service, with zero original series.
This is much a ado about nothing, IMO. I’m glad to see Disney pushing because that will put pressure in other pure streaming services. But, I doubt it will impact DCU much if at all.