The iPhone had a very clear path forward. In particular, while it's success wasn't guaranteed the market (high spec phones) was already sizeable and people were

The iPhone had a very clear path forward. In particular, while it's success wasn't guaranteed the market (high spec phones) was already sizeable and people were paying substantial money on it. The Vision Pro is none of that and they'll have to build the market (a non gaming ARish headset) by themselves.