I'm sorry if my idea sounds alittle communistic, but don't you think the way money are distributed among people is always unfair?

Say, a millionaire easily earns $10000 per day through his/her business not paying any time and effort to it, when a miner earns $15 per day, working really hard in hazardous work environment.

This way a millionaire accumulates enormous funds by doing nothing but having fun, and a miner spends long hours underground, and only has enough money for maintaining oneself and one's family. The millionaire has superfluous money, the miner has a bitter shortage of money.
Let's assume both are citizens of the same country - let it be, for instance, New Denmark. The country has its unique currency, that has no value outside of it, and its own limited budget of money. Even if miner steals money from millionaire (or rather vice versa), on macro-level it doesn't matter much, because money still stay in New Denmark, since the country's total budget is