Since People Lie, Cheat, and Steal

in order to advance, it shouldn't be any surprise at all kids don't find it a problem to plagiarize essays and so on.

Of course the key to quoting others is to attribute it, or, in the case of the internet, provide a live link to the "original" source.

But then there are even authors out there who have earned livings off the sweat of other authors, who in turn likely stole their material from others, and so forth.