If two people do the same amount of hard work, but one ends up a millionaire because they bought a house in the right area 40 years previously, then being a millionaire has nothing to do with their hard work. They are not rich because they "busted their ass" for 60 hours a week. They're rich because they were lucky to live in the right geographical area.
Hard work is replicable. Whether that's hard work pouring metal in a foundry, or writing code, or analysing the stock market and investing well, those can all be hard work. Hard work is not buying a lottery ticket, or a house in an area that gets gentrified decades later. Nor is it giving your wealth to someone else to invest on your behalf.