Sometimes people change. It's good to try different approaches, since one might persuade where a different one fails to persuade. For example, some people respond to arguments about rules while others respond to arguments about protecting the commons.

It's better to err on the side of patience generally, and feels more in keeping with the values of the site. There's are also judgment calls about things like who seems more likely to respond to persuasion, how much history the account has, whether it's related to previous abusive accounts, and things like that.