I don't think Apple's wheels are necessarily going to fall off. The reason why they have tied up the worlds supply of touch screens and flash ram is because the

I don't think Apple's wheels are necessarily going to fall off. The reason why they have tied up the worlds supply of touch screens and flash ram is because they realised the potential early on and made massive commitments to the manufacturers. If Apple stops innovating then those people suggesting Apple will no longer have an advantage are correct. So long as Apple is innovating and requires newer and more modern technology that is going to cost millions of not billions to get set up and running they can continue to have an advantage mainly because they have that intense buying power required. So long as Apple's competitors are always a step behind in seeking to make their computers smallers/faster or inventing the next new gadget that consumers want they will always have the first mover advantage.