It's not because of Apple, they bought those chips long before the Galaxy s3 or the One Series/LTE Evos were announced. They get first dibs on ANYTHING they want as soon as it comes out. Thats what happens when a guy in a turtleneck walks into your plant and says I have 2 billion dollars on me right now give me your new chip as soon a sit's tested. That's pretty much how Apple dominates the supply chain.
The reason they cant make them fast enough is because they have zero competition in the US market no other chip can compare in benchmarks and still have LTE. With the US phone industry pushing everything into LTE as soon as possible they're probably swamped with orders.
- Current HTC Thunderbolt user, near future HTC Evo 4G LTE user! Apple what?