> Open-source equivalents exist,
And now there may be more soon-ish.
The real problem, of course, is that all the good eggs are stored in very few baskets, any of which can be controlled by who knows whom slightly less than completely. If tomorrow HR duckfaces and their pets at Microsoft happen to act up, wipe out all up-to-date code and torch the backups “in protest against mistreatment of Spirit Whales”, nothing of great value will be lost. But what if this happens in Siemens?..
> written by professors with 30 years experience in the field for their students.
In which field? Being professors, writing software or actually designing chips?
> The output of those are chips which are many times more power-consuming and silicon area than the proprietary versions.
When it turns out Siemens is not like Microsoft. Yet.