All I can think of when I read about things like this in the App Store is one of my first jobs: I was a busboy at a country club. Waiters would get tipped (usually pretty generously, as these were wealthy people who were repeat customers and developed relationships with the wait staff over many years), and they would usually in turn tip out the bussers pretty generously too.<p>Until one day, when tipping was "replaced" by a 15% "service fee" that was tacked onto the bill. This was sold to members as a convenience: rather than need to carry cash to tip the waiter, you can sign for it and take care of it with your monthly bill. This was misleading because the "service fee" did not go to the waiters (or the bussers), but instead was simply kept by the business office.<p>To make this all legal, we did all get a raise to the actual minimum wage (rather than the "tipped" minimum wage). This was still a big wage cut, and they lost most of their long-time staff, leading to huge churn. I left shortly after this happened for a better job, but the club closed down completely a couple years later (after 80+ years in operation). I suspect but can't prove that these things are related -- most likely they drank the waiters' milkshakes out of desperation, knowing they were eating their seed corn (to mix a metaphor).