This only works when everyone refuses to tip. Some guy going to a restaurant, not tipping, and leaving me with the minimum of $2.13 just makes my day worse. The business does not care. That’s why I left service in the first place. I’ve had a $0 tip four times in one night before through no fault of my own (the patrons had even complimented me), but making enough to cover that minimum wage difference of only $5 an hour over the course of the week left absolutely no change for the company. A person can’t claim to have the moral high ground by refusing to tip because eventually it’ll be better that way.