While that’s sure nice to have as a customer, I fail to see how it is strategically relevant to the EU to have something similar here. I’d value a functioning, open, and compatible ecosystem of European software much more.
If some genius hasn't already put together a turnkey umbrella project that meets your needs, you're going to have to find your own genius. That's different than just calling MS or Apple, even if their support is slow or annoying. I think Oracle counts, too.
It's not like Europe couldn't build these systems out of FOSS (just like Oracle and others, btw), they just haven't done it until now and it would have been just as easy to do 15 years ago. I think they'd rather get courted and bribed by American behemoths.
I'm an embedded firmware dev, so admittedly I am dealing with an entirely different list of vendors and asking for different things than the typical sysadmin or devops type.
With that said, it has certainly not been my experience that "having someone to call" actually solves my problems all that often. It's occasionally a nice to have, but normally I am reluctant to even start the process because my experience has been that it is usually a net drain on my time and energy to do so.
At this point, I am far more concerned with having access to source code so that I have a fighting chance of creating a workaround for myself, and failing that I don't want to contact my vendor so much as I want to replace them.
It might often have low practical value, but usually high CYA value.