It means that the rich are getting richer at twice the rate as everyone else. This huge inequality in income distribution is what defines many "third world" countries, and has led for centuries to revolutions (including in France!).
That sky rocketing increase in wealth for the top 1% is NOT sustainable.
If you have 3 teenagers of about the same age, and you tell them, "since our business did so well in the last month, I want all of you to share in this and get a treat! So, you, John, you'll get a new bicycle, you, Rick, you'll get a new motor bike, and you, Mike, you'll get a new Mercedes"
Yep, all three may be happy with their "new treat!"
But. . .is it fair? IF they are smart, do you think they will not KNOW the difference?
And if you come back next month and tell them. . ."business is still doing really well, so I decided to secure your future, so I purchase a new apartment building. John, you'll have free use of a studio. Rick, you will have a one bedroom apartment, and you Mike, you're getting the 3 bedrooms penthouse."
But. . wait. . . 6 months later, business is not doing so well anymore, and you go back to your kids and you tell them: "sorry guys, but we have to downsize! So, John, I'm taking away your studio, because I have to sell it. And Rick, very sorry, but I'll have to rent your one bedroom apartment, but once we do better, you can have it back. And MIke, sorry kid, but you're going to have to pay your own electric bill for your penthouse!"
Yep! Nice scenario!