I think that today, working hard isn't really how you get ahead. You get ahead by screwing other people, and this is facilitated by the rules and laws that supposedly elected officials enact. You've got CEO's on one end who make obscene amounts of money, and on the other end you've got companies like Uber who are actually bypassing laws in order to screw the taxi industry. (not saying that there shouldn't be more options for consumers, but Uber isn't it)
My point is that in today's world, hard work isn't what is being recognized and properly rewarded. Figuring out how to screw the next guy is what is called being smart today, and the government is happy to facilitate this in order to prop up the markets which really only benefits a small segment of the population. When self driving cars come into the spotlight, Uber will be more than happy to get rid of all of their drivers since labor costs are of course always the most expensive part of any business, and so while more people lose jobs, Uber investors will become richer and richer.
In conclusion, although recession's comment's were a bit harsh (I thought he was more so joking), the fact of the matter is that working today isn't what most people see as a way to get ahead, so why bother.
And yes, the messed up taxation of today is what creates this huge inequality which wasn't the case 50 years ago based on the charts that I've seen.