Tertiary sources (e.g. encyclopedias) are inherently this way regardless of whether or not it is editable by nearly anyone. One of the strengths in Wikipedia is crowd sourcing and a strong editorial culture that, for example, enforces citing sources and giving unbiased takes, with mechanisms to mark problems with articles rather than deleting them. This ultimately leads to a degree of editorial transparency that is unmet by any other type of source of this kind.