A Gini coefficient of zero expresses perfect equality, where all values are the same (for example, where everyone has the same income). A Gini coefficient of one (or 100%) expresses maximal inequality among values (e.g., for a large number of people where only one person has all the income or consumption and all others have none, the Gini coefficient will be nearly one).
People's income inequality (or) wealth inequality has reduced a lot in the countries like Canada, Norway, Italy, and France. And most people have equal wealth.
While in the countries like USA, China, Brazil, UK, the richer got richer and the poor got poorer. The gap has risen.
In countries like Norway, the rich people are taxed higher and the wealth is transferred to the poor people through various welfare schemes. While rich people in the USA use various tax avoidance (if not tax evasion) methods to pay negligible amounts of tax.
Smaller countries with less immigration from poorer countries may also contribute to less income equality. Also, it is not possible to have the exact same wealth/income for all the population of a country.