There is an obvious correlation - if I employ someone and he's not nice to me, I'll fire him (or stop ordering his services) and hire somebody who is. Why should I suffer for my own money? Of course, there could be cases where I have no choice - like when I'm dealing with some sort of government monopoly like telecom or water company - but even there people are usually nice and there are ways to deal with it if they are not.

>>> Once you start tipping the niceness is much more out there as possibly faked.

What you mean by "faked"? I don't want each of these people to become by best friends forever or have deep emotional relationship with me. I don't date them or plan to spend a romantic vacation with them. I want them to be polite, courteous and helpful. How can it be "fake"? How you distinguish "fake" please from "sincere" please and what that even means?