Didn't I read that Apple pre-sold 180,000 of them already? That hardly seems like a niche product. Some of Netflix's other platforms may not hit those numbers, and that's just the pre-sale.
And with most of these Apple platforms, the effort to "port" the code from one platform to another isn't even porting. You just need to modify it (or verify that it works as-is) to fit the UX paradigms of the device. For us to create an Apple Watch app from our iOS app is ridiculously trivial -- and that's gotta be harder than making Netflix work on Vision Pro.
Apple must have said something to tick that dude off... too bad, because a chief reason for me to buy Vision Pro is to use streaming apps like Netflix while traveling. Not smart, Netflix. I'm disappointed.