I have to say when creating interactive PDF documents Acrobat Professional does the job!
Adobe and Apple have a long history together and a working relationship. In my opinion it is understandable why Apple would not want to reinvent the ability to create interactive PDF documents. Adobe already invented that wheel.
Acrobat 7 will also let you OCR scans and embed the text within the document to make it searchable. If you don't use the pro product, I think you can't expect more than a generic PDF file - one that takes a postscript file (via GhostWriter) and converts it to a PDF.