First, what gives them the right (note not authority - that is done through the end of a gun) to storm anyone's coffers?
Good question. The answer depends on your definition of wealth and where it came from.
Current popular thinking is that wealth is "created", that it was conjured out of thin air by hard work and determination and therefore is the sole property of the owner.
If the above definition is true, then no one has the right to storm the coffers, and all taxes, of all kinds, should be abolished and then the same geniuses who "created" their wealth would then have to "create" roads, water treatment systems and electrical grids.... and no, they couldn't have employees or laborers do it for them, they'd have to do it all on their own, from crushing gravel to smelting iron ore to sewing their own clothes and growing their own food when not building the other aparatus needed merely to keep them alive.
But, these folks didn't have to do all that, because other people did it for them, AND all of these other peripheral things, like roads, water treatment systems, public education, etc, allowed for a population that was healthy and smart enough to secure employment in the economy to be able to go out and make money, and then use that money to buy the products and services of the wealthy.
ssssooooooo, then one could say that the wealth was not truly "created", more that it was transferred from one person to another.
Buddy deciding to buy your widget means that he already has money in his pocket (or credit to make up for his falling wages it seems which won't last too much longer)
So he has TRANSFERRED, or distributed, some of his wealth to you, you didn't just create it out of the blue.
Therefore, for those who don't have to worry about where their next paycheque or meal is coming from, it's safe to say that everyone needs to do their part to make society work. If that's the difference between being able to afford only two summer homes and not three, while the average joe has trouble ponying up the cash to pay for lunch, I don't think that's such a raw deal myself, and that yes, the rich should indeed be taxed more for that very reason. But, it seems that whenever any scrap of wealth is going to be redistributed back to the middle class working joe (who is still having trouble to pay for lunch) the rich howl from the balconies of their second home that we're turning into a communist nightmare.
And that leads into your next point, what classifies as being super rich?
It sure as heck aint being a millionaire.
Today, if you're worth a million that's still pretty much middle class territory (upper middle class actually, but nowhere near being considered "rich")
You're 'super rich' when you're mulling over whether or not to buy a gulfstream jet, I think they go for a cool 40 mil not counting all the additional costs
Or, you're probably also super rich when you buy a 10 thousand dollar martini in NY without batting an eyelash