I totally agree, but I think the state of a research field is too malleable / moves too quickly to be a Wikipedia article (where people expect things to be "true").
A few weeks ago I spun up wikisurvey.org to try and make a place for Wikipedia-like collaboration on research. There's nothing on there yet, but I'm hoping it will enable low-latency collaboration once we get the ball rolling.
Which is why I think a lot of burnt out scientists spend their time there editing articles.