Well then Asia is de-facto doing the hardware. Apple is just paying for it.
Apple is famously sitting on a mountain of cash. How easily do you think they could replicate the supply chain of even one of their products without outsourcing it?
> Asia designs the manufacturing process, which they are quite good at.
Not even that, for some parts like the aluminium cases ("unibody") or the laser-bored microholes in their old magsafe connector for the LEDs, Apple designed the whole process.
Apple is famously sitting on a mountain of cash. How easily do you think they could replicate the supply chain of even one of their products without outsourcing it?