[syrrim]

Some factor needs to determine what the content of page on wikipedia ends up being. Since "anyone can edit" (credentials are not used as a filter), the content is determined by whoever is most persistent. There are also various processes in place to ensure that content is verifiably correct, and wikipedia largely succeeds in that regard. However, basically everything else, including what information is included, and what spin is put on that information, is decided by the wikipedia editors. They succeed in this regard by being willing to spend the most amount of time camping pages, reverting any change they disagree with, and forming cabals of editors willing to stand up for one another when an editing war emerges.

Given wikipedia's funding, it ought to be possible to pay for credentialed experts to curate the editorial bend of articles in their area of expertise. This would have its own issues, namely of causing a bias towards institutionally favoured interpretations, but I think that would be preferable to the status quo.