As is the case with many other issues, the debate about income inequality has become so politicized that most people have lost sight of what it is actually about.
Just to illustrate some of the issues, suppose that you’ve always been hard working and driven. You’ve been competing against other very smart and driven people for many years, got into a highly competitive undergraduate program, then worked your ass off to get into a good medical school. There, you had to compete against even more hard working and driven peers, to get into your preferred residency. In residency, you frequently averaged 80-120 hours a week while being paid a slave hourly wage and handled literally life and death situations, then you got into a fellowship, then possibly another fellowship, etc… At the end of it all, you become a cardio thoracic surgeon and start making some real money.
Suppose that I have taken a different path in life. Noone would call me dumb or lazy, but I was not willing to take on the hundreds of thousands of dollars that it took you to get where you are, accept the risk that, when competing against other very hardworking folks, I would be the one who’d be left standing at the end, and did not want to wait for 15 or so years to start making money. So, I also worked very hard and became a carpenter, and a good one at that.
Now, some 15 or so years later we meet again. I can certainly argue that I’ve worked just as hard as you have, but in a different way, am really good at what I do, and am in high demand. Sure, you now make way, way, way more money than I could hope to make, which has created tremendous income inequality between us. Do we actually need to do anything about it? I chose my career path independently from you, and it’s not like I would’ve become a cardio thoracic surgeon if you did not. Sure, taxing you more would reduce our income inequality, but doing so isn’t going to create more opportunities for me. Taxing you more and giving me the money instead would certainly make me feel good, but it’s not like it’s going to cause me to become a cardio thoracic surgeon as well.
Income inequality has been rising since the '70’s, so it’s not a recent phenomenon, nor is it one that is affected by the party that happens to control the executive branch. This shouldn’t be surprising either, as, for instance, the job of a carpenter essentially hasn’t changed since the '70’s. They haven’t become significantly more productive, nor has the job required significantly greater skills or training. On the other hand, cardio thoracic surgeons can now do things that weren’t even imaginable in the '70’s, and can save many more lives than they could back then. They do, however, have to train much longer, take on significantly more student loans, and, if they make a mistake or are even alleged to have made a mistake, they face multi-million dollar liability. So, their compensation has gone up as well at a much higher rate than that of carpenters, but this isn’t a problem that needs to be fixed, nor does taxing the former more in the name of “reducing income inequality” accomplish anything.
So, instead of making ideological arguments about the evils of rising income inequality, people need to look at its causes. To me, regardless of whether we have rising income inequality or not, what we need to strive for are improved educational opportunities for people, so that they can then decide on their own what career path they want to take. Simply taxing higher income earners more to reduce income inequality makes for a nice campaign slogan and causes people to focus on the wrong goals and priorities.