We believe that what we possess we don't ultimately own. God is merely entrusting it to us. And one of the conditions of that trust is that we share what we have with those who have less. So if you don't give to people in need you can hardly call yourself a Jew. Even the most unbelieving Jew knows that.
You built a factory out there good for you. But I want to be clear. You moved your goods to market on the roads that the rest of us paid for. You hired workers that the rest of us paid to educate. You were safe in your factory because of police forces and fire forces that the rest of us paid for.