1. The iPad eats the consumer PC market.
This is happening right now. In the third quarter of 2012, PC sales were down 8 percent on a year-over-year basis worldwide. In the U.S., sales were down 14 percent. A big chunk of the decline can be attributed to the rise of the iPad. Apple sold 14 million iPads last quarter, which is more than the top PC maker, Lenovo, which shipped 13.7 million PCs. Throw in Apple's 4.9 million Macs, and it's the top computer maker by a mile.