According to various studies and world inequality report 2018, large portion of world's wealth is concentrated in the hands of small portion of population, while the bottom 50% holds less than 2%. This distribution of wealth is highly unequal and cause of concern for many people, as it contributes to social and political unrest all over the world.
It is the main thing that makes wealth concentrated in the hands of a small population because of family factors, they inherit these companies and businesses (wealth) to their children, that's why they are only concentrated in a small part of the population. For this problem I think it has nothing to do with a democratic system of government.
What governments can do to make it more equitable?
The government's job is to provide guarantees for its people, these guarantees are concentrated in the ability of the people themselves, meaning that the rules apply to everyone and to make them fairer are these rules, but they cannot control everything individually. Completely surrendering to the government is the style of people who have no ability to manage their lives.