I don't really think it's that there is a feeling of _obligation_, more so fairness? I.e. "if they are listing the other businesses then they shouldn't be able

I don't really think it's that there is a feeling of _obligation_, more so fairness? I.e. "if they are listing the other businesses then they shouldn't be able to discriminate against my business without good reason." I think it is important to prevent that from happening.