not all investments end well friends, even if someone makes an investment he could end up bankrupt, someone must know what the potential is in this world now, many people get money from the internet
But as far as I know they are pertaining to the inequality of wealth in the case of fiat. Which is indeed what's going on right now. The rich gets richer, the poor gets stuck in poverty. This happens because those few people knew how to get around with fiat and it's also basically because of pyramiding. This happens oftentimes in the corporate scene.
In the case of bitcoin, this could still happen. The few whales are still generally richer than most of us here. But one thing they couldn't do that fiat can is control the price. Which I believe is much more desirable for the common joe as it allows them to make the most out of the coins they have right now. Unlike in fiat where they can control the price and basically make everyone poorer than they are if they want.