Good initiative!
The problem is: publication is based on reputation. Reputation takes time and effort from the entire community.
I feel like modern infrastructure (Google Scholar, AI research, LinkedIn, etc) helped to decrease the importance of high-impact journals such as Nature, etc. Researchers don't rely on highly curated printed journals in their physical mailbox to get informed what's happening. You can just use tools to scrape content much faster.
But still: It can be career decisive if a reseachers lands a publication in a for-profit journal such as Nature.
The CS community has a much nicer publishing pipeline where most top journals/proceedings are attached to non-profit conferences and the fee is 0 (beside a conference fee).
I wish more fields would work like this: you publish with a conference proceeding and talk on the conference about your paper.
Researchers are themselves responsible for typesetting, advertising, etc. This and removing for-profit stakeholders can reduce the costs a lot.
Conference papers should be abolished, because they require international travel, which is getting more difficult every year. 10–20 years ago, when travel was cheap and easy, it was mostly just people from developing countries who could often not attend. Typically because they could not afford it or get a visa in time. But today almost everyone is impacted by wars, international tensions, travel restrictions, immigration policies, and the overall uncertainty.
I've attended three international conferences in the past year. In each of them, there were plenty of people missing. People who would usually have attended but could not, due to issues that did not exist in the 2010s.
A difficulty, too, is that choice of publishing venue is based on visibility and readership. And in my experience, EU-administered projects around scholarly publishing like these are well-meaning, but make baffling choices about focus, organization, and scope that hobble them.
Consider that this is a journal whose scope is defined not by field, but by funding initiatives. It places an astoundingly small emphasis on making research visible: contrasted with most major journals, with websites that might be split between research articles proper and editorial articles, but are still heavily focused on presenting articles, Open Research Europe doesn't have a single non-truncated article title on its front page, and devotes the vast majority of the page to journal administration and self-advertisement. The current lead highlight of PNAS is a section of rotating blurbs about articles, both research and editorial, for example. The current highlight of Open Research Europe is a description of Open Research Europe and logos of associated groups, including a second copy of the European Commission logo, in addition to the one on the top of the page. For that matter, the journal has a three-letter domain name, ore.eu, that it uses entirely to talk about itself, with only a single, small, text link to the journal itself. Why publish at a journal where your research seems to be far down their list of priorities?
With that said, I'm hopeful that CERN taking this over is a good sign. Zenodo is a great asset to the research community, and I feel like CERN is better situated to understand what will make a journal where researchers will want to publish. And I'd note, unlike Open Research Europe, Zenodo's front page is primarily a list of recent uploads, complete with partial abstracts.
>Researchers are themselves responsible for typesetting, advertising, etc. This and removing for-profit stakeholders can reduce the costs a lot.
That can depend on how the proceedings are published. Dagstuhl Publishing, for example, does do some typesetting and proofreading work for proceedings they publish, they just have it arranged in an extremely efficient way (everyone submits LaTeX using their class, so they're mostly fixing mistakes). They also do charge (an extremely small) publishing fee to the conference.