Many office files are saved as PDF for distributions or archiving. The original files will not be kept, so if I have a software that can convert PDF back to the original file type, that maybe useful. For example, we sell thousands of products with constant price changes, we have to copy and paste page after page of price lists. But to the scanned PDF, OCR is needed, and usually the converted files are crappy, even if I have the Adobe Acrobat.