I personally view personal incorporation as a pretty valid successor to the current system. Take a read of the incorporated man / incorporated war book series, they aren't perfect but definitely better than capitalism/communism as it actually values each human being in a personal individual way, rather than based off of the chances and opportunities they have had access to throughout their lives.

IE: a poor african child in zambia has most of his shares purchased by an angel investor, and learns that this kid would be able to do some really great things if he went to school, so he pays for  highschool/university and in return expects an income from his future engineering work proportional to the share ownership in that person, and then that angel investor is also owned in part by other speculative investors (maybe his parents or his university) essentially fair, accountable and humane bondage.