Yes. Most users of .NET is in the enterprise (as opposed to tech and startups) and Java has positioned itself as the go-to platform for big data analytics and processing.
I think this comes down to clinging to an antiquated product model. A lot of the technologies that are seeing rapid adoption are open source and driven by transparent communities. In some cases companies back them (e.g. cloudera, datastax, 10gen, typesafe).
And where exactly do you think most devs work? As far as startups go, and we may be usual, but we are a healthcare analytics company using Sql Server for medium? data and processing, with a pretty light .Net middleware/front-end.
Yes this might be true right now, but take a look at a lot of the tech startups are cropping up - humor yourself and look up a list of the tech ipos the last two years. They are overwhelmingly based on open source technology and they are also displacing or disrupting your traditional 'enterprise' businesses.
Even though C# and .NET has a huge developer following, .NET is losing ground to OSS within the top traffic driving sites. 10 years ago, people would build their MVP in .NET because it was the best technology around, but nowadays I see more people building new businesses and placing their strategic technology bets elsewhere (Java/Python/Ruby or Node).
A lot of these developers don't want to be married to the Windows eco-system, for a variety of reasons. Microsoft cannot continue to thrive on the sole basis of it being the only game in town anymore. So all in all what I'm trying to say is I don't think the long-term prospect is looking great.
