"For the iPhone, it is quite common to recognize "Angry Bird" was the killer app that made the iPhone success."

Say what???? I've been on iPhone since 2007, and I've never, ever even heard that suggested.

Regardless, you're missing the point. The set of apps that make your phone useful and valuable to YOU are, in all likelihood, not the same ones that make it useful to ME.

Similarly, what may make the VP valuable to me again is probably going to be different from the things that make it valuable to you.

I may want it for the high-definition virtual workspaces. You may want it just to kick back and watch big screen movies in your apartment. Someone else may want it for gaming, or education, or...

The VP doesn't need a killer app.

https://medium.com/macoclock/vision-pro-missing-the-big-picture-920fb7de012d