If the iPad is a luxury item why have other companies not beaten it in price/performance? The Surface doesn't have a retina display, for example. Yes, Apple mak

If the iPad is a luxury item why have other companies not beaten it in price/performance? The Surface doesn't have a retina display, for example. Yes, Apple make a profit on their hardware, which is apparently not the case for Nexus tablet or Surface (rumor has it), but their devices are pretty competitive in price for equivalent quality. They just ignore the low-end market in the non-iPod category.