We don't have bad social mobility. We have people that won't exercise it. Unlike those other countries, government doesn't decide who will go up or down. We decide that for ourselves.
When you go to a basketball or football game, look at the field or court. What do you see? You see a bunch of people who became millionaires playing a child's game. LeBoob James grew up about 25 minutes outside of Cleveland. He was raised in the Akron projects. Dirt poor. Today he's a billionaire in a few short years. Show me one person in any of those countries that ever had that kind of success. He's not alone, most all of those players on the field didn't come from money either.
The United States creates a new millionaire every day and sometimes several. Our lotteries alone make people rich overnight. Buy a scratch off and win a million bucks. Happens all the time. In fact it happens so often they created a show out of it called My Lottery Dream Home. It's on HGTV. They get lottery winners who are looking to move after they hit the big bucks and the host shows them houses and condos, and they decide which one they want to move to.
You don't realize how fortunate you are to be born here over anywhere else. I do, and I thank God he put me here.