What does this even mean?
If so, let me ask you, why Bill Gates gains soooooo much more money than a simple garbage man?"
Your socialist friend, perhaps, is unaware of how the market works? There are lots of garbage men and garbage companies. They receive compensation comensurate with the value they supply to society.
Ditto for Bill Gates. He has earned tons of money because people have voluntarily chosen to pay him for his products.
Why does you friend think the amount of money someone else earns is his concern?
What does this even mean?
Good question. It was an informal email and he probably intended to write more questions. To his defense, he's German and speaks 4 languages.