Yes, some of them become arrogant after they specialize in some field and gain a reputation in their city or country on their work. Once this happens the "human factor" disappears from them and the "money factor" takes over. However, this is not true with all of them. I know of a superb eye surgeon in my city back home who has kept a day of each week reserved for the poor. On this day he performs cataract surgery on the needy, free of cost. The cost of the lens which is needed in such surgeries, is borne by the hospital with the hospital receiving funds through charity. As such, it takes all sorts of people to make up this world.