It's an interesting phenomena but to be honest you need a leader with a vision to change the course of history. Circa 2006-2012 everyone orbiting the DACH sphere of influence believed they need to speak german even in tech jobs and then due to USA's influence and huge market we realized we actually dont give a crap about DACH that much. Thus it spawned companies in EE,Baltics and everywhere else with a focus on mostly american market.
And then all of a sudden due to lack of workers and other factors even DACH began to change and basically accepted English as the defacto working language in tech.
Unfortunately it's a small change, too little too late as they say. Without proper transeuropean companies and unified market we will never be able to challenge competitors from Asia let alone the USA.
Also by default DACH companies are very limiting to foreigners to go higher. Sure they hire a lot of engineers but you will never see overachiever Indian CEO or Asian CEO or even board members.
Most EU tech and non-tech companies, with some notable exceptions like Spotify, have this mentality.