To be fair m, Marvel Unlimited has been around for 10 years. And they can’t just add all of their comics at once, because there’s many factors that go with it such as licensing, royalties, etc.
All that said, it really just remains to be seen where DC Universe goes from here with its comic side. They say it’s a “rotation” of comics, which is a more telling term than “curated”. This means titles could be added AND taken off, which is much different than Marvel Unlimited where most added titles stay on the service. I hope that more titles are added than removed, or at least they are upfront beforehand about what will be removed, but we shall see.
I would like to point out that this service is a streaming service AND a comics service, while still being cheaper than Marvel Unlimited, which only has comics. That said, they weren’t exactly upfront before about how many issues of each title would be included in the service, or whether the comics side of things is meant to be a way to try out comics or is meant to be DC’s version of Marvel Unlimited.
We will really just have to wait and see what happens. But of course, some people who have been expecting an actual DC comics streaming service have already put in money for a whole year of service, so it’s understandable they are disappointed and wanting answers.