Gaining all we can: Relation to the Neighbor

Having grown up in the UMC, I have heard the mantra of "gain all you can, save all you can, give all you can" repeated ad nausea but rarely have I seen people go beyond the first step in their personal dealings. I was pleasantly surprised to find that in the sermon that this mantra originates, most of the "gain" portion focused on the negative ways to gain. Beginning with gain at the expense of bodily health, then mental health, and then finally focusing very heavily on gain on the back of the neighbor. Wesley focuses on the alcohol trade for condemnation, which was not surprising to me as temperance is something the Methodists used to focus very heavily on, but then moves on to some industries that I would not have expected.

He starts by focusing on Surgeons, Apothecaries, and Physicians, which is not an area I was expecting to be attacked. Though he definitely calls attention to an evil that these professions would be capable of, was this really a problem in his day?

Finally, he brings up the arts, stating "If these [arts] profit the souls of men, you are clear; your employment is good, and your gain innocent; but if they are either sinful in themselves, or natural inlets to sin of various kinds, then, it is to be feared, you have a sad account to make."(John Wesley, Sermon 50, I.6.) Would this be in the portrayal of themselves, and would no evil be allowed to be portrayed? If so, then wouldn't any morality play or other art form that brings morality into question, even if to condemn said practice, be suspect? Or does it require more from the client side of dealings, and what they take away from the encounter with the arts?