Hi Shane!
Translating a topic as broad and observation based as wealth inequality may be a difficult task, because you'll need to narrow down what you want to do for the gameplay without too much to base it on. In my opinion, I believe it would be a good idea to find smaller examples of wealth inequality in the way you want to portray the subject, and make a game around that example. This might be a stronger approach because it would be difficult to cover the entire topic well in a small game, I believe.
Regardless, I'm interested to see which direction you'll choose to take, and wish you luck.