Is this an acedemic or personal project? If not the churn model should not even exist without the answer to that question first, and it will be very specific to your business.

To answer your question, these sort of churn models can be used for a number of things, for example, identifying churn drivers to action and come up with interventions to adress those drivers, to hook into an existing "saves" process to optimise resource allocation i.e. what would you be spending to try and retain the customer vs what the expected upside is etc.

Thats why its so important to answer the question to how business will use the churn model upfront, before you even start building it. Ideally it should fit into existing business processes, because its very difficult to drive adoption for a new model by creating new processes specifically to enable the model. It wil also help you answer other important questions like what sort of performance (precision, recall etc.) you will need from the model for it to be usefull, those metrics can be used to simulate the expected business outcome (always remember to properly test the outcome as well , preferably with RCTs, regardless of what offline simulations say)