I think that almost proved my point about different people (management) looking at things differently. Others would look at the OV and determine that the ROI isn't going to be worth it if we continue throwing good money after bad. Depending on what acceptable ROI is to the company, and what $$$s are involved in the budget/time, it may no longer be worth continuing to spend money on a project, and instead focus on a new project with greater ROI by moving people to the new project.

Perhaps for internal-use-only projects where the only ROI is increased employee productivity, continuing to spend on a late project makes sense. A lot of sense. For projects that result in off-the-shelf software, how you spend additional money and time may take on a different hue, especially if the project in question is not a critical aspect of a flagship product.