![Smile :)](./images/smilies/77smile.gif)
Apparently, some wait staff can do rather well on the current system, especially at high end restaurants. That's one reason students give for taking waitress/ waiter jobs, as opposed to other things they could do part-time to help out the finances. Plus the flexibility in hours, of course.
At one time, I also heard that you only had to declare the standard amount (15%?) as tips, and (depending on your honesty) the rest of your tips were pretty much undeclared to the government for tax purposes. Not sure if that's still the system.
So I don't know if the people in the restaurant/ tip dependent jobs actually want things to change.