Actually, I did that, numerous times, although it was mostly to do spelling correction or in one case linking to external pages trying to leverage Wikipedia's S

Actually, I did that, numerous times, although it was mostly to do spelling correction or in one case linking to external pages trying to leverage Wikipedia's SEO(?) value (ie. the external pages were discussing the topic in the wiki page in order to promote their own business, which wasn't related at all), which shows that it's clearly easy to get Wikipedia to fulfill its purpose. So all in all what I did was minor editing, perhaps it doesn't count as what you would mean as an edit immediately reverted by other editors. I have no doubt that there are factions monitoring pages of strategic value, it makes sense for a website of that importance culturally. But it also means that the Wikipedia core community must always remain vigilant about these unfortunate slides.