That is a very good question, without a good answer.
Politicians are bound to their donors, so if we can create or join an existing super pack we might be able to apply some pressure that way.
We could also work to change the employee - employer relationship so that each employee is their own company. I know it sounds silly, but companies are already looking for ways to cut costs, and a lot of the big companies will only hire part time workers to do so.
We could also work to change K-12 schooling to include economics, specifically the tricks the wealthy use to grow their own wealth so that more and more people have an idea of what could work for themselves. Change schools to focus more on creating entrepreneurs rather than worker drones.
And then there is voting in politicians that are clear on the subject and feel the way we want them to.