6 men owning as much wealth as the poorest 50% of the planet doesn't actually mean much while ever they aren't keeping their money under the bed away from everyone else - it's still in distribution.
They still go to sleep at night, get up in a morning, have a shower and grab a cup of coffee then go to the bathroom, eat dinner, watch a movie and go to bed I would imagine.
The wealth that they have is an illusion even for themselves.
Now on the other hand, that six individuals have the power to control how their money is distributed is a very real problem, but the wealth itself isn't.
I haven't really been a fan of macroeconomics since the nineties when the whole thing was proved to be an illusion and then confirmed yet again in 2008.
It is a crisis for sure.