As a writer, one can make money by writing for many different businesses. A short list would include these:
While most writers prefer to write creative, artsy pieces of muse-inspired emotion, there are many others who love to tell people what to do and how to do it in compact “how-to” articles. The articles can sell quite well, depending on the skill of the writer and the committment to submitting them on a regular basis. The fiction, on the other hand, does not pay all that well and largely depends on happenstance when it comes to getting over $20 for a story.
Some places where one can get an idea of what writing for others can look like:
What most writers end up doing, when they discover that money is not going to fall into their bank acounts, is take up writing that pays their bills, and then write the muse-inspired labors of love in their free time.
And this is why I am now going to actively market my editing and writing services. 🙂