Imagine the state the world would be in if someone had put into practice his proposed "solution" back in, say, 1500.
People who succeed do not just benefit themselves, they often benefit many others, including future generations. And people are motivated to succeed by desiring the rewards that come with success such as wealth, fame, etc. Without such incentives, success and progress suffer. Art, architecture, literature, music, and poetry suffers. The study and practice of medicine, physics, and chemistry suffers. Innovation in industry suffers. Free enterprise suffers. Everyone's quality of life is reduced because the automobile was never invented, penicillin was never discovered, radio was never discovered, the electric light bulb was never invented, the refrigerator was never invented, etc, etc, etc.
Should we discourage the Newtons, the Shakespeares, the John Carmacks, the Sergey Brins, the JK Rowlings, and the Steve Jacksons of the world because there are so many other folks who are perfectly content to spend their lives working at the Try N Save and watching 5 hours of TV a night and some of those folks find their lives dissatisfying in comparison? Quiet down! You're being unruly! You're making everyone else look bad with your success! Here, come slum with us, it'll make everyone happier in the end, honest.
Time and time again history has shown that unfettered individual liberty maximizes progress, both for individuals and for society as a whole. There will always be inequality and tragedy, that's the nature of life. Trying to pretend that we can make everyone identically equal and erase everything that makes people different from one another is a distopian vision, very Borg-like and anti-humane.