Your point here is very important because if all rich and poor people of the world or all traders use Bitcoin, then Bitcoin will help to eliminate the differences between people. But mostly those who are doing big business or managing an organization. In their case, they may not make a full investment in Bitcoin at some point but some people have. Those who are very smart tend to store bitcoins as well as some other currency, which serves as a reserve for them later.
The world is filled with problems that money can solved most of them sufficiently. Everyone needs money to survived and cater for their essential needs. Sometimes I wonder what this world could turn into if not providing the necessary details to push forward. The world is already a better place only for those category of people that are successful, they lived in comfortable luxury mansions and drives the latest exotic cars and take tour round the world. While the financial challenge category will only wish for a better life more like an upgrade.