I'm not saying intergraph would eliminate the autocad, but autodesk could disallow it as a way to overpower a competing software. Thus the acquisition of Briscad strengthens intergraph's holdings in case such a thing did happen. Not sure what the software developers agreement says, but I wouldnt be surprised if they were updated in the past few years to allow such a thing after grandfathering in older developers. But for the time being they are still fighting for market share, which is why offering a standalone package not reliant of a competitor's makes a lot of sense. If either can get companies to commit to only their software package and not both, they have the advantage.