These posts turn into shouting matches way too quickly. I'm far from an expert on economics, but here are a few things I know:
1) Wages aren't necessarily tied to one's contributions to society, and we need to recognize that. The "don't like it? Work harder" attitude isn't constructive in any way. After all, as a teacher, I have a job that society says it values, because educating the next generation is clearly very important. For that job, even being in my 10th year and having an advanced degree, I don't make anywhere near what I'd likely make in many other jobs that don't necessarily add value to the world in the same way. For instance, even a bad baseball player on a major league roster makes $500,000 to add virtually no wins, no marketability, or anything else of tremendous value to a team.
This is what it is. I'm not saying we should have a revolution to overthrow it, but I am saying let's stop saying that people are always rich because they work hard and add value to society and that people are always poor (not saying I'm poor, necessarily) because they are lazy and don't add value to society, because teachers, doctors, engineers, and countless other people sure as hell provide a more necessary and useful service than a person who swings a piece of wood at a ball for 6 months out of the year.
2) Maybe once we hit the true optimal solution, perhaps economics will become a zero sum situation, but we're not there yet. The best way (at least from what I understand) to benefit everyone in any current economy is to grow the overall economy. While this video is partially about health care reform, it also talks about the idea of growing the economy (or in this specific instance, making a bigger pizza):
https://www.youtube.com/watch?v=R7LF5Vj2n64
3) Despite the fact that the best way may be to grow the economy, it doesn't mean we shouldn't consider the wage gap a problem. You cannot possibly tell me that a CEO is worth billions of dollars while many minimum wage workers for those same corporations should earn $7.25.
Does that mean I think we should raise the min. wage to $15? No. I've read that minimum wage increases haven't ever really hurt an economy before (when people ACTUALLY study, not just make assumptions and state them as far), but that's a huge jump, and I don't think $15/hr is wise.
This is probably my own way of shouting at the wind and won't accomplish anything, but if you're one of the people just spouting what the angry talking heads on cable news are telling you, you're not helping. The economy is highly nuanced and complex, and talking about it either like there are no problems or like any one solution will be a panacea is counter-productive to either finding a solution or educating people on what solutions might or might not work.