Blockchain right now is helping rich more than it helps the poor. If you calculate the prices, when you want to send 1 dollar to someone it is highly impossible via bitcoin, maybe some altcoins could help you better but in the end how would that person go about spending it or cashing it out, so basically its impossible to send 1 dollar from one person to another using crypto and having cash in the end.

However, when you want to send 20 million dollars, blockchain is the best method there is, and that would help the rich people a lot, the amount is very little and cashing out is quite easy at that amount. So, as you see if rich people realize bitcoin is the real deal and they would be even richer if they used crypto instead of banks then wealthy money will go towards crypto instead of banks which will rapidly make crypto the standard instead of niche.