Greed is the root of just about every problem we have, but that does not mean billionaires are bad. I'm pretty sure these valuations are all on paper, that is to say, they don't actually have a billion dollars of cash, they own things that people just value highly because they generally produce things of value for other non-billionaire people.
Example: Drew Houston, creator of Dropbox who is/was a user here, is a billionaire. He didn't steal food out of starving people's mouths - he created a product that people willingly gave him money for, because the problem Dropbox solved was more beneficial than the subscription cost.
Example: Drew Houston, creator of Dropbox who is/was a user here, is a billionaire. He didn't steal food out of starving people's mouths - he created a product that people willingly gave him money for, because the problem Dropbox solved was more beneficial than the subscription cost.