Try that with IT. Did MongoDb exist 5 years ago? Did Node.js? The list is endless.
Information Technology moves too fast for the German style and concept of apprenticeships (in my opinion). There are apprenticeships for Informatik, but I see them much like undergraduate Computer Science courses.
My experience of CS undergraduate studies are that you will learn the basic concepts, and a bunch of bullshit thrown in that you'll never use again in the workplace, but that is about it.
Having more people who have been taught properly from first principals rather than only learning the latest trendy thing woudl be a very good idea! You would certainly have less of the "developers who cant program fizz buzz problems"
And I would expect a competent person to be able to pick up mongodb or nodejs even before they had finished the 4 year apprenticeship.
I started my career on the vocational track track (in mech eng) and on my second day at work they said "pop down the the company library there is a book on FORTRAN learn it"
(sorry for caps lock - this is copy and paste) - FACHINFORMATIKER ANWENDUNGSENTWICKLUNG (software eng./dev.) - FACHINFORMATIKER SYSTEMINTEGRATION (sys. integration) - IT-SYSTEM-ELEKTRONIKER (IT technicians) - IT-SYSTEM-KAUFMANN (IT business) - INFORMATIKKAUFMANN (again IT business) - Mathematisch-technische Software-Entwickler - Informationselektroniker - Fachangestellte für Medien- und Informationsdienste - Mediengestalter Digital und Print
In conclusion: the chamber of commerce ideed did its job. If they did it very well is a question of perspecitve.
To bring this into startup context: Most very early Startups won't take apprenticeships as this is an additional workload and overhead (apprentices want to be tought...) that might not pay off in the short term. As an apprentice I would also think twice about joining a startup as one needs at least 2 1/2 years to finish the apprenticeship. (Startups might not exist that long.)
my 2 cents
But your right a startup with say 5 developers trying to develop a product in a short time scale is probably not suitable for trainees.
How how do the apprenticeships is it day release or block? 1 day a week at college and working 4 days a week is not that to much to ask from an employer? especially as apprentice's probably are paid less.
I am assuming there is a system of training levies so that the cost is born across the whole of industry - when I did mine (in mech eng) we joked that the government gave the employer more in grant subsidy for us than our actual salary.
Why are not larger companies in Germany not training IT apprentices.
A start up almost by definition requires more experienced workers.