I'm keeping the business small by design: I have absolutely no desire to manage/supervise the work of a large team - been there, done that, hated it. The maximum I'm willing to manage is a calling service and a part-time assistant, mostly to offload administrative work I'd rather not do.
I'd rather make a very good living and keep it simple (particularly with a child on the way) than spend my life compensating for the complexity that any huge operation inevitably has.