In a capitalist system if you're an employee, you have a glass roof on your success; you can get a really high salary, but you'd still be making money for someone else. I get that though, because you're not the one taking the risk, and even though you might be really productive and hard working, that's not enough in the free market.
To be successful as an entrepreneur working hard is not enough, your project might never get lifted up and you still made a lot of effort. You gotta also be really lucky or just 9000IQ market expert that you really know what's gonna sell and how. And it's not really that obvious that you think it is before you actually go and try. Not even Warren Buffett can predict what's gonna work and not, he's taking a risk too.