I don't get it. Ditching publishers to fund expert communities? Shouldn't there be some form of organisation that connects those experts, selects some as journal editors, provides infrastructure for submission/review/paper access, etc? If yes, wouldn't "publisher" be suitable term for such an organisation?

There exist publishers that, instead of being part of big media outlets, a run by research organizations themselves (e.g. EMBO press). I agree that it would be nice if more would be published there.