>I see this sentiment a lot, but I disagree with it. What are "iTunes, Xcode, Safari/Chrome, and a mail client" doing now that they weren't doing four years ago

>I see this sentiment a lot, but I disagree with it. What are "iTunes, Xcode, Safari/Chrome, and a mail client" doing now that they weren't doing four years ago? Lot's of things. XCode was rewritten and does live AST syntax completion, background compiles, etc. Safari/Chrome have several more features --did Chrome even exist 4 years ago?