It will attract "big time developers" in version 1 because being first to market on a new platform is an enormous advantage, even if that platform won't have significant market penetration for years.
Angry Birds, Fruit Ninja, etc. were not particularly revolutionary apps and would never top the charts if invented today. But because they were some of the first games on iOS they became multi-billion dollar franchises.
It will "attract" a few. As in, Apple will pay people to develop apps for it, and will basically buy teams to develop apps. I have heard of these deals happening. But you won't be able to make a bunch of money off it for many years, so how much developer talent can they actually attract? The iphone was waaaay different. There was instant utility for the phone that attracted millions, it wasn't insanely expensive like the vision pro, and the apps you could develop were simple and useful. Yes, there will be a bunch of AR apps from iOS you can use instantly on vision pro (I assume, not actually sure), but to develop a full featured app that takes advantage of the interface will be quite hard, and thus quite expensive.
No one bought an iPhone to play Fruit Ninja, though. They bought it to get access to the internet on the go. Essentially the browser was the killer for a phone.
Angry Birds, Fruit Ninja, etc. were not particularly revolutionary apps and would never top the charts if invented today. But because they were some of the first games on iOS they became multi-billion dollar franchises.