I'd like to ask a question, about a specific group cases that this rule has been called on:
When players (I fall in this group, and on a very large scale) 'exploit' mistakes in the game coding to come ahead with more money than they otherwise would get, (cases that I can rember: the routes in delta that were quickly nerfed, as they were 'too profitable' (which is above a 30 million an hour threshold, I believe) and the incedent when slaveliners were buyable for 2.9 million.)
How do such cases harm gameplay?
Now, my turn for a question: Why do you want a definitive explanation? If I know why you are asking I'll be better able to answer your question. Just curious and don't feel obliged to answer.
Because, quite simply, I was hit for such a thing, and do not understand why such behavior was wrong. I was told that I shouldn't have spread around such sensitive information, etc, but I did not consider myself doing anything wrong or against any rules. I've been told its unfair, but everone had the same chance, which is my idea of fairness.