How wikis help in increasing a brands credibility?

Wikipedia pages have been known to be quite beneficial for business organizations as they help in increasing the credibility of these businesses. Now, if you know how to create a wikipedia page for a celebrity then these pages can even be beneficial for them as well. Wikis have been known to help countless celebrities increase their credibility and reputation in their target audiences as well. When you show your presence on a platform as reliable and trustworthy as wikipedia then whether it's a brand or a celebrity, the credibility will increase regardless. Do you agree?