Earlier quoted context omitted.
Nope, thousands at best. Most abandoned Microsoft. Or better said, Microsoft abandoned them. Choosing to release an incompatible set of new languages with no upgrade path was hint enough that Microsoft had purely it's own interests at heart and not that of the lowly VB and ASP developers who made their OS and web server successful. Most took the hint and are now happily supporting Java, Ruby, PHP, Python and Perl web…
I think MS misjudged its audience there (a rare stumble for them). Visual C++ people thought of their work as code and expected to have to change it for a new version. For them the transition to managed C++ or C# was natural. Visual Basic people thought of their work as documents and were as surprised as if MS had released version of Word that couldn't read documents from the previous version.
That might well explain the unwillingness of so many to move over even after .NET started to deliver the goods (from version 1.1)