When it comes to personal computing Apple is merely a boutique brand, mostly popular with artists, hipsters and those afraid of technology (my JBWS client who is a yoga instructor is a perfect example of the latter--she freely admits it).
Where Apple kicked ass was the mobile market. The iPod saved them. The iPhone made them. Without Steve Jobs we'll see if they continue to innovate or if their products will be merely derivative going forward. It's happened before. People are already whining about how "not special" the iPad 3 is, that it's merely derivative and brings nothing new to the table. That's the trouble with having products people get addicted to like crack, if you don't keep upping the ante they turn on you just like any other junkie.