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.
That's what Lightning is for. You don't have to use an altcoin for fast and cheap transactions. It requires you just a simple third party wallet to receive payments right away, which is a perfectly viable option since you don't require the uttermost security and self control of funds with such low amounts.
As far as spending goes, you can't do much with $1 to begin with, unless it concerns a third world country, but even then you can convince the store or other person to accept your satoshis. It might require some effort, but it's not super difficult either.
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.
Cashing out $20 million easy? Can you give me an example of how cashing out that much in value is easy?