GrapheneOS is leading Android custom rom, but it isn’t a startup and doesn’t support much hardware.

The others are LineageOS based and have weak points when it comes to security, privacy, and frequency updates.

All Android custom roms are still directly tied to Google’s software development (AOSP).

Sailfish OS (Jolla) is Linux based, but is proprietary, so not really an open platform.

So seems like Jolla is the only company really developing an independent mobile OS.

Companies focused on digital sovereignty. The EU, both companies and end users, are completely dependent on US software and operating systems. There is a bit of movement around governments using Linux, but there is nothing happening around replacing iOS and Android.

I have mainly been seeing AI and defense companies in the German tech market. Not the kind of companies we need.

I am a software developer in Germany and have also been wondering where are the jobs for creating the Linux software to replace Windows software. So far I have seen hardly any.

https://en.wikipedia.org/wiki/Arbeit_macht_frei