As you know, there are many many Wiki articles about individual corporations. Clearly many of them must have been written either by employees of the corporations or someone hired to write the article based on the extensive and detailed information provided some of the articles, such as the one about Oracle Corporation.
Is it reasonable to wait around and hope that someone will write an accurate, useful article about your company? If a Wiki article about a corporation is written following all the appropriate Wiki guidelines (factual, properly sourced, etc.), it seems that it should be okay no matter who wrote it.
The problem is that when people write about themselves (or their clients), the results aren't what an encyclopedia user wants. Just kick back and wait for somebody else to start the article, or go get involved in doing something else and maybe somebody will notice you. You can put a short blurb on your Wikipedia user page about who you are and what you do.