Either they themselves worked hard or someone in their family
. You're saying Bill Gates, Steve Jobs or Mark Zuckerberg didn't work hard?
Fact is, success is based on hard work, there are a lot of studies about it... Businessmen hone their craft as well.
It's time people stop being jealous and start being productive.
Did the Royal Family work hard to be rich? I suppose William the Conqueror 'earned' the throne at Hastings, did he not?