I really missed the pointyou missed my point. I'm not talking about the beta. When FC are live on the production servers, there is no reason for non-owners to use them. Why would I ever go to someone else's FC if everything there costs more because of tarrifs, there's no faction rewards for activity, no missions to take, etc.
But I'd say there are reasons to use a carrier not belonging to you, if you use it as a squadron asset.
As single player, apart from handing in stuff at UC out in the black? Not much...