Yours truly on Mac360.
For a competitor– PC notebook or hybrid, Android smartphone, or accessory maker– to compete with Apple requires similar features but sold at a lower price point. Head to head does not work against an entrenched market leader unless something is different– differentiation is key. Price is one differentiator. There are others. Or, a competitor could make a similar product but with more and better features for the same price as an iPhone. Because Apple’s products are continually moving iteratively improving– a moving target– making a better mousetrap becomes difficult for a competitor to accomplish.
Simple. But not easy.