I do not think you can intelligently separate the ultra wealthy from the state infrastructure and hence from our modern economies. The ultra wealthy currently acquire and maintain their wealth unjustly, in my opinion.
I think that it is true that it is obvious that some have made their fortunes directly through the state and its mechinations, but not so for most. The,y like the rest of us, are both beneficiaries and victims.
Without the state, the proletariat would likely swarm the parasitic elite. We would devolve into a more primitivistic lifestyle and I do not see that as a bad thing.
If this is true would the destruction of the state result in massive loss in human life? After all a modern economy is the only way to produce enough food to feed the worlds current population. What i mean by this is: To produce enough food you need modern farming techniques, to use modern farming techniques you need modern farming equipment, to have modern farming equipment you need modern manufacturing techniques… etc…
If we do indeed need the modern economy with all its trappings to maintain our current world population, would eliminating the state and returning to a more primitive existance even be a viable choice? And if that is the case that we are stuck with a modern economy… are the very wealthy absolutely vital to everyone elses we being?
Or maybe not.