Good food for thought.  I'm not sure I agree with what I understood to be the ultimate point of the article (that we need to tax the rich more) but it does seem to be true that if there is no demand it doesn't matter how many companies you start up, they won't survive.  It seems that one group of people likes to focus all on the supply (rich people create businesses and grow the economy) and the other group of people focus all on the demand (tax the rich and give money to poor people so they can spend it to create jobs).  It is true that without capital accumulation we cannot expand businesses, create new ones and grow the economy, but people do need to have money to spend.  Supply and demand are two sides to the same coin.  I'll have to think about this more and do some more reading of economic texts to see if I can find a solution that satisfies me.