I think most companies create divisions, like Microsoft has its XBOX division, whereas Apple tends to work as a singular unit that occasionally shifts focus entirely to neglect other projects.
A classic example is how when the original iPhone was coming out, Apple put all their engineers on it and delayed Leopard.
Now with their core hardware/software products, it's pretty evident they're all on the same team. It's what I call Taco Bell style hardware/software. Lots of offerings, all the same ingredients. They don't really neglect anything per se now, but it's extremely homogenous.
But how that works with something that is entirely different, like a streaming service, I don't know. That should be its own business within a business essentially. It doesn't need Apple's taco bell ingredients (the chips, the recycled software between platforms, etc.). But knowing Apple, I could see them putting their crack App Store Review Team onto the Apple TV Plus service.
I don't want to say they still run like a start up because that makes it sound better than it is. They're too big to be run the way they are. It does seem like everything is still very centralized despite the fact that they have a credit card service for God's sake. I mean that's an entirely different thing than everything else that they do. And then a streaming television service. And yet I imagine it's still run with e-mails between Tim Cook and . . . well I was going to say Phil Schiller but I guess he's mostly gone, but yeah, the same top few people.
I think they see tech as changing too much to make real commitments to permanent divisions, and I think they buy their own BS about everything working better together by making each form factor (Mac, iPad, iPhone) a mimic of the others rather than making individuated products that each have their own merits. And that philosophy that one team can do the work of another team that's in a different sphere *may* be what gets them in trouble with Apple TV Plus. Just a guess.