If the analogy is applied directly, it means the truth is bought and paid for, and someone else has the receipt, and I shouldn't complain if they claim exclusive rights to it.
No. It means if I pay the bill you be nice (especially to me) or you leave my house. You pay the bill and you can invite anyone to say anything you like at your home.
Claiming exclusive rights to the truth? You can have all the truth you want, just belly up to the bar here but go easy on it at first, you might not be used to strong drinks yet. It’s on the house!