While we can debate plenty on what the right amount of App Store fees might be, it is objectively true that developers absolutely care about the market of available consumers on the high end platform.

I thought ultra-ridiculously-high-end was referring mostly to Apple hardware and bundled software.

I mostly meant when Apple goes crazy like Vision Pro being $3500, Mac Studio and Mac Pro prices, etc. Those are low-volume items and I think Vision Pro will be relegated to that niche too. If they cut a lot of useless fluff like the eyeball cams/screens, and focus on fit/price they can have a good V2. But the "spatial computing" thing was dead on arrival, it'll never take off as it hasn't taken off in 40 years. People don't want to wave their arms in the air all day.