Wikipedia expects the original posting to be done by someone who knows something about the subject. They do expect accurate and confirmable information, and you do open the door for others to make comments/corrections to what is posted, so a page needs to be monitored - especially at the beginning - to mke sure that you don't have inappropriate "additional information" posted by people who might not be helpful.
If you're the one who knows most about your "business" and history, then you're the one who needs to make the first post. If they believe it's inappropriate, they'll tell you before it appears and/or will ask for corrections or additional information.
You'd need to consult the Wiki FAQs on posting for the details; but numerous articles I've seen - especially on fairly specific tech subjects - are quite obviously written by corporate advertising hacks or "company bloggers." Most "politicians" of any note, and quite a few "journalists," have Wiki pages that they, or their lackeys, wrote themselves.