And how much was it that suppliers were being pushed by Apple into being 'innovative'? Would anyone be producing laptop size retina panels if not for Apple's demand? How long would we have waited for retina laptops if we had to rely on HP, Dell, etc.?
Combining old components into new products can be just as innovative as creating new components themselves. Innovation is not restricted to the lowest levels.
Edit: let me clarify this a bit. If apple goes to LCD panel suppliers and says 'you only support 1080p in this size, but give us 2880x1800 and we'll buy x million units', is it the supplier who's being innovative? Remember that apple also had to get nvidia to produce a mobile graphic chip with a much higher max. resolution -- it seems to me that it was Apple's vision of the whole that drove the innovation for the parts.