I argued on another HN article about tipping that it's better to change the law to protect lower-income employees first, and then change the custom, as opposed

I argued on another HN article about tipping that it's better to change the law to protect lower-income employees first, and then change the custom, as opposed to trying to fight the custom by screwing over your server and hoping the law will eventually change. Fairly sure diners and businesses would change their tipping behavior pretty quickly to accommodate any change in the law.