I wonder if it's worth worrying about that. There's plenty of freelancers who have no ambition of growing beyond a small team that helps them with the side stuff. Those are the freelancers who don't want to become entrepreneurs. I think they're an interesting enough market to target, and maybe it's OK if those who have dreams of growth don't feel addressed here?

Come to think of it, it may actually be flattering to solos if you recognize them for what they are and don't treat them as not-yet-bigs, if that makes sense.