I was just going to say basically the same thing.
Karl Marx's whole theory was that "capitalism had had its day." That's what Das Kapital was about, and it was published in 1867, almost 150 years ago.
Same with "peak oil" and "peak food," Malthus, Erlich and the rest of the sorry parade. People who thought the world would be great if only there weren't so many people besides themselves and their families in it.