Hourly writers don’t scale easily
after all, you still need to manage them. Unless you know how to manage writers and monitor the quality of work they produce, it will cost you more to do this than necessary.
Freelancers are even worse
Good freelancers are always looking for work, which means they aren’t always available when you need them. This puts you into a constant “hunt” mode for good writers... which translates into at least 1 full-time staff member constantly having to recruit so you can get consistent work at a consistent rate.
The best part?
You only pay the work you need, when you need it.
What else can you ask for?