Actually it is really hard if you work for a company and you need some amends on Wikipedia.

Imagine your quite large company has a small guitar shop on the other side of the globe that has the same name.

You just want a disambiguation so nobody thinks your company is this little guitar shop. You can't just edit it yourself, you need to find a Wikipedia expert and bribe them to somehow help with your plight. It is easy to imagine that a vast PR company will wave a magic wand, but it is not always like that.