ELMS Integration with QuickBooks

It is common knowledge that QuickBooks has a large market share when it comes to remodelers and contractor.  This is also the reason why so many industry software solutions, including my competitors, will integrate with QuickBooks.  "How does ELMS integrate with QuickBooks?' is routinely asked during most demonstrations and presentations.  I finally made a commitment to a potential client that I would make a quick demonstration video showing this integration.  The video can be seen here. I now wonder why we don't see more examples of how software integrates with QuickBooks.