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.
What governments can do to make it more equitable?
https://wir2018.wid.world/I think that it is human nature to be competitive because everybody wants to be at the top, to control others. So the issue of class has always been there. Those at the top will do anything, even it it's evil to remain there, because they control the wealth of their society, they will make sure that it is not evenly distributed. This top or high class individuals will go as far as putting their loyalists at the head of government, just to protect their wealth.
Government can not do much to bridge the gap between the rich and poor, especially in capitalist countries, where the industrialists and the super rich controls the economy. They will always have the upper hand in wealth distribution.