You have your head up your ass. But you're right about one thing, it's not hard to figure out.
Some jobs are traditionally compensated at least partially by tips. Everyone knows which jobs these are. If you want to avail yourself of these services, you should expect to pay a tip, and figure the cost of the tip into your total cost.
If you're such a cheap SOB that you're unwilling to pay a tip, don't try to rationalize it by saying the rest of the world should change.
Look in the mirror instead. That's where the problem is.
