>> especially in light of the fact that you now see case studies on the MSDN site that promote activities that replace Fox with .NET?

There are no longer any case studies on microsoft.com that say that. The case study a few days ago was in error, but it has been fixed. If you re-read the case study at http://www.microsoft.com/resources/casestudies/casestudy.asp?CaseStudyID=14755, it now properly promotes VS .NET and VFP working together and the company still uses VFP in the solution. I just replied with more details on this in the thread called New case study in MSDN Flash in the Chatter section.