For instance you work for an organization that doesn't properly take stewardship of the resources it has and it turns into disaster.
You work for Company A which has customers B and C. B is a more important customer of A, so you work on B's project instead of A's project. Now "C" asks you why his project is late: the triangular conflict is a much better situation than 'we are floundering' but if you tell C about it you will get you in trouble with both A and C.
In that case, C might ask you to quit working for A and go work for them but you have a contract that says you're not going to walk off with a customer.
Problems like that can sneak up on you long after you're involved with a "gig" and feel like you have enough chips in the pot that you get "frog boiled" into making a mistake. See