Normally, I'd be inclined to believe the iWork suite's lack of complexity would make it difficult to format attractive documents, build compelling spreadsheets, and create arresting presentations. Apple's Numbers and Keynote boast the same advantages vs. The basic Pages interface features just a dozen icons. I believe that's why Apple's worked to create such simple, yet capable, software.
Consider how many times a day a business user reaches for such commonly used functions, and it's easy to understand how confusion and frustration arise, not to mention production inefficiencies. The most basic, commonly accessed functions - such as those used for text formatting, inserting elements, and file formatting - can quickly become lost among a myriad of other functions. Most Microsoft Office users tap only a fraction of the productivity software's capabilities.