Always happens...
They have to justify their job somehow. "Look, I saved us 10% on this project"...
The fact that I just gutted the warranty I normally offer on our radio networks doesn't get mentioned. Then, when things fail, the engineering/non-bean-counter folks are thinking "yay, gets fixed under warranty" until I send them back the amended warranty that the bean counters approved to get their price cut...
I've only had one customer not come back for repeat business because of this kind of game, but based on anecdotal information from a friend "in the know", they weren't coming back anyway and used that as the reason.

