Old character names are reserved for previous owners. So it's either you're using a different UCP account or you have name changed it and someone else had it on their account so it's reserved for someone else.
I hope so as well. Six players might be an over-kill for some businesses. Even for nightclubs it's not easy to find 6 players, specially when most of the staff (bartenders, security, dancers..etc.) would mostly change with each opening for many reasons.
IRL there is a company model called one many company model, and sole proprietorship.
Keep up the good work anyhow.