I believe that on the contrary, bitcoin and other altcoins are designed specifically so that even a person who has a little money can earn. One example is when you participate in a bounty campaign, get tokens, then sell them and invest these funds in bitcoin.
People who have a little money can also enjoy the benefits of trading or bitcoin investment, of course  little profit. Unlike the rich, where the profits are huge because the capital is also large. It can be concluded that bitcoin provides equal opportunities for the poor and the rich, only those who are lucky can enjoy profits. Luck is also balanced with knowledge of bitcoin, analysis of up or down price movements, and the right time to buy or sell bitcoin.