There is no point in being jealous. They became rich through their hard work. For example, Bill Gates put decades of effort for Microsoft, before the Windows OS and MS Office became popular. None of them were born with a silver spoon in their mouth.
If you like, Trump the start-up capital by his father. I think that with the release of the land helped. Look how we live the children of the rich. How do you say in Russian "Money goes to money". You agree with this idea?