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I suspect that the number of applications written in Visual Basic between 1990 and the end of 2001 will dwarf the number of applications written in .NET between 2002 and 2013, the same period of time.
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I have pondered this assertion for a few days. I have concluded that it is more probable than not that you are wrong...

The beauty of .NET is that it is NOT language centric. As other langauges come into focus (Eiffel to name one), more and more developers will get into the .NET space. This is why the VB vs. C# argument misses the point.

Will VB or C# be the most popular langauges? Who knows and who cares. It is about the framework first, and which langauge you use to implement the framework second. I believe Eiffel supports multiple inheritance (something VB and C# don't) Not that I think MI is a big deal, there are those that do think it is important and use it. Eiffel is a popular language in some areas and BIG projects use the langauge. I know for a fact that the number 2 credit card processor in the world uses Eiffel extensively. Heretofore, .NET would not be an option in that space. Eiffel .NET makes it possible.

And lets not forget that .NET assemblys can be hosted in the next version fo SQL Server...

Again, I think your wrong...