I just meant the 20% and 40% as an illustration how increased wealth can make others lose out if productivity doesn't increase proportionally, I wouldn't read t

I just meant the 20% and 40% as an illustration how increased wealth can make others lose out if productivity doesn't increase proportionally, I wouldn't read too much into it. Starting/growing a company is the obvious investment that increases productivity (pg isn't wrong). But selling your labor also increases it on a smaller scale, as long as you don't replace someone else. Actually literally anything that creates anything increases productivity. Even creating bitcoins in a sense does (but trading them doesn't)... until they crash. But real estate and stocks only move ownership from one person to another. They don't create anything. Even issuing new stock only moves ownership.