I can hardly wait to use Amazon App Store to install Amazon and then open up the Epic Game Store to install random game and then open up EA Game Store to install random game and then open up Facebook App Store to install Facebook and then open up the Apple App Store to install the Blizzard App Store to install Hearthstone and then go back to the Apple App Store and update the Blizzard App Store so I can get the lates…
I hate the fact I have to use Apple TV to watch Servant, Disney+ to watch The Mandalorian, Netflix to watch Stranger Things, and Amazon Prime Video to watch The Boys, and HBO to watch Game of Thrones, and so on. I'd much rather all of those other companies gave Apple a 30% cut of their revenue.
Additionally, not just up next, but based on my subscription patterns, content from CBS, Showtime, Starz, AMC+, Epix, HBO, Cinemax, Sundance, Acorn, BritBox, IFC Films, and MUBI, as well as Apple’s TV+ channel, are all browsable without leaving the consolidated TV UI, and do not need an app installed at all.
From your list, Hulu, Disney+, Netflix, and Prime all do need apps installed. I do have to go into these to discover their own algorithmically proposed (personalized) thumbnails. But for day to day watching, the only app needed for each brand you happened to mention (except Netflix) is the TV app, and when searching for a show, shows from all of these (except Netflix) are in the search results.
Unfortunately, there are apps that work on Apple TV that do not play nice with the consolidated view and watch-roll. Some that were well integrated, backed off, most likely having to do with the waterline on viewer measurement / analytics data.
Netflix is the prime offender here. It wasn’t integrated, then it was, then it wasn’t again. They seem to have landed on a (for them) happy medium, where if you have Netflix in your home (top) row of icons on Apple TV’s home screen, “mousing over” (aka selecting w/ remote) the Netflix icon does show you your Continue Watching and Trending Now options, so you can go directly to those without opening the Netflix app itself. But they no longer show up in even the search interface, which probably keeps me subscribing to and watching other sources more than I need to.
To help give a signal to media owners, and to Apple, I systematically un-subscribed through individual apps and subscribed through the fully integrated “Channels” as those channels appeared. This individual statement is lost in statistical noise, sure. But what you describe is clearly better for the home user, and if enough folks do it, they’ll catch on.