Your position that everything would be fine if only those dirty billionaires didn't steal all that money for themselves is indefensible.

It would be if that were my position. I argue against capitalism, not the people in it.

Try this for a change: Capitalism is bad when compared to X...

That's so easy. Capitalism is bad when compared to communism, which has existed for 190,000 of the 200,000 years of the existence of homo sapiens; we just didn't have a name for it back then ;-)

Slavery did it, feudalism did it, communism did it, capitalism does it.

Slavery, feudalism and capitalism are the same, all modes of production in which the owners of the means of production exploit the labor of the working majority, there's no difference between the three in a systemic sense (hence the "wage slave"). The communism you refer to isn't communism at all; it's state-capitalism, again exactly the same model of production in which it's the government minority that owns the means of production. Learn what communism is and don't simply go by what countries like to call themselves; the Democratic People's Republic of Korea is not a democracy, nor a republic and certainly isn't for the people...

It's safe to say that we disagree.

But here's a point of agreement though ;-)