I experienced this several times as an employee. It becomes hard to stand when you realize that every positive contribution just results in more money being shoveled out of the window behind your back (mainly because of greed, inefficiency, keeping the status quo, and wreckless behaviour caused by trust in your capabilities to somehow fix it again, every time over again) -- as opposed to contributing to a more efficient way of working for everyone.
Been doing extreme over-hours in the hope of fixing stuff once and for ever, only to realize your job becomes more and more like shit-shoveling, since management starts to feel invincible (and protected by your contributions), which leads them to make even more errors without accountability. I've seen some of them with tears in their eyes when I finally quit. 'nuff said. Profiteurs!