What I see, in any way, CRA will open new page in history of OSS.
Now OSS will divide to two parts - software for fun (may be for education, arts and science, read more), and serious software with liability.
I'm pretty sure, for example, ISP and big tech using OSS and contributing to OSS will become much stricter in what they allow in PR's, and in what they use as dependencies.
For about education, EU policies for toddlers/teenagers are stricter than for adults, so, possible appear of restricted teen versions of smartphones software, and one of restrictions could be only liable software.
Also, some business entities will be prohibited to use software which avoid liability, so, most current OSS could become prohibited (because many dependencies are not liable).
It's now hard to predict exact, but I'm sure, will be restrictions in air/space and in transportation; manufacturing involving dangerous substances and dangerous environments; may be restrictions in HoReCa businesses.
Science/arts usually have exceptions for many restrictions, they allowed to free use copyrighted or prohibited for public/commercial/wide usage things, like Nazi symbols, but only while "enough to explain idea", or "enough data for research", nothing more.
That's easy. From juridical point, all software without liable owner except mentioned science/arts, will be prohibited in all businesses working at restricted markets.
For listed above, could add (cellular) communication companies, energy (electric or gas) companies, water pipes, and other infrastructure critical, medical, emergency services.
And from Democratic experience, ANYBODY could become steward, just need to claim responsibility and may be conduct some bureaucracy procedures to prove ability to be liable.
From this my conclusion, if NOBODY will claim to be steward for some software, it will automatically become prohibited for mentioned businesses.