"I wasn't thinking of any specific examples. But, oh, any good sorcerer who isn't being actively prevented will eventually come across opportunities to do someone a favour, and, hmm... it seems the calculation is not 'will the benefit to this person be worth my time and effort' but 'what am I going to get out of it and is it enough for me to bother'. Observably it often isn't. I cannot fathom the mindset."