[flagged]
I'd argue that, for software companies, not very much; at least if you contrast it with a hardware company. If you're, say, forging steel, you're using roads, trains, a lot of electricity, you've got an industrial plant, worker unions, public accident insurance, etc., etc. - a significant chunk of state-associated infrastructure is a part of your business, and was a part of your business when you built it.
But for software companies? I mean, you need a stable internet connection, good mobile phone coverage (tricky in Germany sometimes), rule of law, efficient bureaucracy (e.g. when hiring people), good banks which don't lose your money, electricity, etc. - none of these "infrastructure factors" feel as big as the ones for a hardware business.
On the contrary, for a software business, one could argue that Germany is actively hostile to you: Founding a company takes weeks / months and is expensive (notary), most processes are still paper-based, hiring people (especially internationally) is a huge pain, mobile internet is spotty, residential internet has outages. Charging customer credit cards via Stripe exposes you to a rabbit hole of VAT bureaucracy - all companies I've met so far rolled their own, broken software stack to somehow match up their Stripe + VAT charges with their internal bookkeeping software (e.g. Datev). A huge mess. It doesn't end there.
But I may be wrong.