I've read Marx and many other critics of capitalism.

I didn't appreciate your reference to my "ego." However you meant it, at a minimum the presence of that word makes things personal. There is no need for that. That my strictly rational understanding of justice contradicts in meaningful ways sincere feelings and beliefs of mine would seem to bely any suggestion that my intellectual efforts are ruled by egoism.

As for my Response to your Response, speculative bubbles are not an essential characteristic of capitalism. They can exist--have existed without it. All they require is too much money in the hands of too few people. Capitalism has resulted in that outcome, and in that way contributes to them, but "the mass production, etc." can exist in a societal environment that protects society from them--without limits on income/wealth or taxes or any redistribution of income or wealth.

Personally, I am all for massive redistribution of income and wealth, but my understanding of justice tells me that differences in income/wealth, no matter how vast, are not definitive of injustice. On the other hand, expanding the DDI to include everyone employed in any business or government would not be unjust, either--which, you'll recall from the article, would eliminate economic exploitation.