For Steve and for Apple, software is not just about the feature set. It’s about the entire user experience. The fact that the original iPhone didn’t have copy and paste is a testament to how Apple sees the user experience as more important than the feature set. In that regard, 5 years later, iOS is still ahead.
You can use their ideas and you can copy their products, but you cannot copy the time and energy they put into those products, and you cannot copy their attention to detail. Those you have to do on your own. Five years later, some companies still haven’t figured that out.