But there are still minimum premium requirements though siaa, right? And what would be an example of minimum?
You would go from 100-300k in production to like, 25-100k with an average of 50k. You also get a little more slack from the carriers because they aren't going to micromanage EVERY agency under the cluster since the cluster really has you guys set up as branches under one agency (in a very simplified explanation.) You get some slack to get things up and running and some attention from carriers that normally won't touch you because the cluster is also able to help get the agency up and running.
One of the biggest carriers I would mention that does well with clusters but not direct appointments is Safeco. Safeco doesn't like direct appointments until you have a 200k-300k book but will do an appointment as one of your first carriers as a cluster agency (at least in my state and some surrounding states).
SIAA has some minimum requirements, sure, but I'm sure they also give a lot of support for the money you are paying. This is what the carriers like and are willing to give a chance since you are kind of being baby'ed.
Captive experience is nice but you had 10 years to learn one company. You will be learning 4-5 companies in 6 months instead to be successful, and in a lot less of a structured environment.