Because you want to become a pigeon.

I never quite get why performing your job = entitlement of expecting tips as granted. Office jobs don’t get tips either when they perform their jobs. Maybe there are bonuses based on revenue but that’s another thing. So why when office jobs are out buying a coffee or ice cream, they are expected to tip?

If the boss is terrible and doesn’t pay their workers a living salary for spending their time and effort in making the business run, what customers ought to do shouldn’t be supporting this model out of mercy or compassion but use their action to vote for businesses they support, like when they would usually make other purchases elsewhere.