Silicon Valley as that if the US? How Germany attract foreign investors with the so many competitors in the region? Hard to achieve IMO.
well there is competition, our Silicon Valley(s) are pretty different compared to what you're thinking. Ill explain it.
-Mecklenburg-Vorpommern has BioCon which is a place for life science, biotechnology and Bioscience
-Lower Saxony has CFK Valley which accelerates in carbon fiber reinforced plastics technology, as well as manufacturing and recycling industries
and they have measurement valley which manufactures machines and components, for the alignment of headlamps and wheels for vehicles as well as calibration devices for drive assistance systems
-Munich in Bavaria has Germany's leading "silicon valley" currently with Isar Valley which has 2 of the world's top universities, a Mercedes Plant, Siemens company and other top companies.
-Bavaria has Medical Valley which counts for Germany's "digital health hub", plus 500 medical technology companies, 65 Hospitals, 80 institutes for applied science at universities and 20 non-university research institutes. along with this, medical valley also makes up one third of medical production in Germany and exports ~3% advanced medical tech to the world
-Berlin (Silicon Alle) : basically was formed to help support several international tech industries as well as local companies.
-Silicon Saxony is based in Dresden for 300 companies in microelectronics and IT clusters, which is the largest in Germany. It is also known for it's technological trends such artificial intelligence, robotics etc.
-Rheinland-Palatine has "silicon woods" in Kaiserslautern which is an industrial city, but its university is becoming increasingly growing for science with a focus on IT. which is going to lead up to other settlements in the near future.
-Saxony Anhalt has Solar Valley which is known for Photovoltaics.
Potential : North-Rhine Westphalia: basically what the economic minster of NRW Andreas Pinkwart wants is he wants to turn the entire NRW into all of these mentioned above, of course it'll take time however the time is coming. Düsseldorf will become Germany's first major smart city, with most of the main projects starting 2020. He plans to add several IT schools, a top university in the city and so on. He wants Aachen and Bonn to have a electric car manufacturer, being the top starting in 2020-onwards, Cologne and Düsseldorf will have Bioscience, Biotechnology in the future and He wants Cologne to have a "medical valley" of their own. Dortmund will be home to several microelectronics and IT Clusters in the west, and possibly home to a "Solar Valley" itself in between them and Essen
now that said, of course you'll have states fighting to take a chunk of that with competition, but the one thing NRW has is, is the Ruhr area (a major industrial zone) plus NRW has one of the largest state economies if you want exclude the federal govt. money.
Before, NRW's plan to become Germany's "top silicon valley" or equivalent anyways, Berlin was trying to become all of Europe's Silicon area for real. however they only have Silicon Allee which is not really that major
there is/why several reasons why Berlin couldn't do it right now
-rising prices which is causing many to move to other states/cities
-the university of Berlin is not well known, large as let's say Ludwig Maximillian University of Munich which is in the top 100 universities of the world
so more or less Berlin, couldn't compete in major terms of any the current Silicon Valleys that I mentioned. NRW is not trying to "out compete" San Francisco per se, as much as it is trying to compete against others internally.