Even if a player expresses his opinion on problems, it may or may not get attended to. Let's face it, there's a steel ball traveling at high speed, crashing into plastic and rubber over and over again. The people who cares the most are the pinball players on location. They put their money in, play the game, and usually know everything about that game. The game is slowly losing the elements that were thoughtfully designed into it making it fun and challenging to play.
Weeks go by.
Then again, maybe not. With less and less care given to the pinball machine, it makes less and less money. The game gets less and less play, therefore, Mr. Operator devotes less and less attention to the maintenance of the game. The diminishing return is a spiral down. The sad thing is that Mr. Operator doesn't see what's happening.