It's not that the country is run by a handful of super rich people, it's that a handful of people have become super rich through inheriting/crime/being clever & when you are super rich then you have more options.
He doesn't appear to know what shorting is, because he thinks the person you borrow the stock from "gives you money back".
Shorting only drives the price down if there aren't enough buyers, because the stock was overpriced.
Not all rich people horde money, resources, and such though. Many do distribute their wealth so others can have opportunity where they may not have otherwise. People invest in people they believe will do well with the investment. I do this, and I am not wealthy.
It all comes down to content of character. Material Treasures are the source of all our evil, and remaining mindful of that, can help to prevent us from forgetting and becoming seduced and enslaved by it all, allowing our hearts and minds to fall to coveting; be it for the wealth, or the power, influence, attention, and favors it can bring.
All of that said, it does not matter how a person came to control mass amounts of wealth, be through honest capitalism, dishonest capitalism, thievery, Inheritance, donation, or communistic overtaking; because that person is still bound by the same weaknesses and temptations that all human beings have contended with and within them selves since pre-history, on into present day, thus they are fallible, thus they can be tempted, thus they may to them selves or others, they may be led to cheat, to steal, to oppress, to deceive. And there can be those around them who will be loyal in exchange for the ability to not die, to also reap rewards, to live as a god among men, and so forth.
At the root of it ALL, systems are not the problem, though as for systems, they must be proven to work before we should incorporate them into all walks of life globally; be it a so called "free" capital, so called "social", Mob Rule, aka Democracy, or a Republic Bound by a Constitution.