Anyway, there's starting to be some changes there - IBM missed a big contract or two with large clients to smaller outfits. Between that shift and the quality grads coming out of DTU, there may be some tech opportunities there if anyone starts investing money that way.
I would _love_ to go work over there but I doubt I could meet the requirements and I'm not lucky enough to have an EU citizenship.
While the system isn't always too kind to start-ups (high tax etc) they still do exist.
I've been working as a developer in Denmark for 7 years now (currently Xamarin) and haven't had a problem finding interesting projects.
Actually, apart from high personal income tax, Denmark is one of the most business-friendly countries in the world. https://news.ycombinator.com/item?id=7391268
I think there are company-sponsored visas available. You should try contacting one of the Danish companies you're interested in working for. They're always hiring.
[1] http://jobs.lego.com/en-us/searchpage
[2] http://jobs.danfoss.com/jobs/
And Denmark is a Microsoft-land as far I know. So keep that in mind.
For startups, no. There's as large an open source scene here as anywhere else. Ruby on Rails was started by a Dane (David Heinemeier Hansson), as was PHP, C++, and the V8 JavaScript engine used in Node.
1: http://opensource.com/government/13/2/danish-municipalities-...