On competence as a virtue

I have very competent friends who get frustrated by the incompetence of others and my sympathy for them is usually tempered by my sympathy for the incompetent person who has irritated them, especially because I myself am incompetent at a lot of things many other people are quite good at doing.  But today I was thinking about the competence of one of these friends and wondered how innate it really was, realising in fact she has probably become so competent because her role has required her to be, in order not to let anyone else down and in order to be able to compensate for the incompetence of others.  Rather than an innate gift for competence she is just more willing than most to learn how to do things and take care to do them properly.   So competence has a moral aspect to it I hadn't really thought about before.  This is a small thought but I think it is complete.