Company wide wiki – or individual wiki for each team

If you use some sort of Wikipedia (like Azure DevOps or Confluence), do you opt for a company wide Wikipedia, or one for each team?

Having individual Team wikis does make it easier to find what you look for inside your team, but also makes it harder to find stuff in other Teams Wiki. Going for a company wide Wiki doesn't only provide transparency – it could also encourage talk across teams (though I don't always see this happening).