Apples price is about Iphone, Ipod, Ipad.

This kind of gadget, you need constant innovation to drive sales.

If there is no new Iphone 5 in the next 2-3 years in the pipeline, we may see people not that enthusiasm about buying Iphone already.
You need constant on top to maintain the sales.
Unlike, old fashioned business like palm pil, everyday you produce palm oil only.

No doubt about it, but still as a tech company, you constantly need to innovate, outclass your rival, make some product people want to have it, want to change it.
Without it, sales could drop in the long term future, unlike McD, or Coca-Cola, even without any special invention, your sales will stay pretty constant throughout, just need advertisement to boost it in between.

Apples share price surge lately few years, is not because of Mac, but Iphone, Ipod, Ipad.
Back then without those 3, Apples share is not like what is today.

Frankly speaking, Apples produce some product, that people want it, not actually need it.
Most people use Iphone for what?
Voice call, surfing the net. --- Other smart phone also have the feature, but Apples produce something people want it.
It is like produce a branded stuff that make people want to buy it, instead of need it.

People need flash, but Iphone and Ipad don't support flash.
People need USB 3.0 interface, but Apples product don't have it (or yet)

Above just my opinion, I could be wrong. Just post what I known.

AAPL is the second most valuable stock, or the second most expensive company, (shares x market price), just after ExxonMobil, last time I updated.

Tech stock is more cyclical in nature, good for some period, then perform bad for some period.

As tech gadget is constantly changing, today top seller model/product, may not be the top product next year.

Unlike McD is the top seller of fast food, we know 95% it will be top seller for the next 3-5 or even 10 years down the road, with the SAME product.