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/Unfortunately yes, the wealth we humans amassed over the years is distributed very unequal across countries, and even more unequal within all the countries. To be honest I find it the number of 20% owning 80% of the wealth quite high, I expected it to much lower. Just look at the super rich for example - worldwide the 26 richest people held as much wealth as half of the global population (3.8 bn people). It's kind of insane that there are not more civil wars around the world and people are demanding change. The wealth of the 1%ers keeps increasing even during crisis times, whereas the wealth of the largest part of the population remains constant. I don't think that the government is going to change anything, because they are being funded by the rich families. There is a huge lobby industry behind the politicians that finance all their campaigns. Without the money of the rich, the politicians would never get into power.