That's the result of a tech-centric worldview (read startups, sw). Quite the opposite is true, for instance in the area of 'Green Tech'.
> While that indeed is one of the cornerstones of the german economy, these companies are most of the time too small for an interessting tech IPO.
I don't your argument here. You mean success == IPO here? There are plenty of highly profitable Mittelstand companies with a profit and revenue much higher than e.g. LinkedIn. What does that mean here, that LinkedIn is unsuccessful or that the other Mittelstand'ish company is? IPO is not a value of its own as some reports might indicate. Looking at Mittelstand, as the author wants us to, is about the values surrounding a company, for instance to re-invest money in a sustainable way, that it is not about growth for growth's sake (which seems to be an inevitable by-product of going public!) but making better products.
> Finally, what in my opinion makes it very unlikely that a company has a sucessfull tech IPO in germany anytime soon is people. There's education, focusing on producing people for the existing technologies and, even worse, companies.
For University-level education, this definitely and absolutely does not apply.