The top 10% have had increases. The rest have decreased.
So the rich are getting richer and the poor are getting poorer.
It cannot sustain. See this TED talk by Nick Hanauer
That's an awesome talk.
This only shows data from 2007-2014. If you're looking for sustainability the correct takeaway is that recessions with tepid growth are unsustainable.
Considering that the recession officially ended in 2011 but that the recovery never reached the majority of Americans, I think this makes its point well enough.