That jibes with my understanding, based purely on anecdotes from users. It seemed like there was an entire, thriving community south of me who Microsoft completely abandoned.
I personally know a shop that was halfway through a migration from VFP to a Django web app. After a key person left, they tossed it and moved to, and I can't believe I'm saying this, VB.NET. I wanted to shake them: "have you learned nothing?"
Anyway, this should be a good lesson for anyone thinking about using Microsoft technologies.