Heed Socrates, “Familiarity breeds contempt.”
If you want to know the character of the people you do business with, watch who they are as they get to know you further. Do they conduct themselves with a respect for the relationship? Or do you see contempt grow as they get to know you more? It’s an easy test of the character of the person and what they think of relationships.
I would look for the customers and the team that grows in respect as familiarity increases. It’s a better recipe for successful outcomes.