While I agree with the rant on general principles, there's just one tiny problem...
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.