re: Easy access to funding -- absolutely, I think it is the risk adversity that kills everything, esp. at the angel stage.
re: a bootstrap entrepreneurial culture -- Most Europeans don't want to work long hours either and it's legally questionable to ask them to. that's a show stopper.
re: Building new stuff is actively discouraged here, nobody likes doing bold experiments: not customers, not investors, not even developers. -- Sadly have to agree with you based on my experience in Berlin. Even downloading a new app on a phone is regarded with a good deal of suspicion.
re: spirit of creativity and experimentalism -- I have a hard time knowing why this is, but I've written on it before. May interest you:
http://fractastical.com/2013/06/05/a-developers-introduction...
Overall, I also find that Europeans for the most part don't want to do billion dollar startups. They seem to think that there is something wrong with the large amounts of money involved, and saying that this is your goal is more likely to meet (in my experience) with criticism than encouragement.
This seems true across central Europe (France & Germany) while the big successes mostly come from foreigners (i.e. Skype, SAP).
But on the other hand, billion dollar startups create lots of fairly wealthy people that can then be angel investors and pump up the ecosystem. I don't see any other way for the system to evolve, but I was amazed by the degree to which there was a mental barrier against any sort of large scale success.