He’s an idiot
He may be, but he's also voicing standard economic ideas shared by the world's government and business elites.
That's the problem. All the people who are creating a world where AI & robots can do most work, think this is how it will work out.
Who knows, we may eventually get Star Trek style communism - maybe the problem is no one is taking Big Tech seriously, when they come right out and say what they are doing.
The odd thing I find in statements like this from the likes of Marc Anderessen, is that if prices tend towards zero that means ALL prices. Stocks, property, 401K portfolios.
I'm sure if challenged on that, he would say he doesn't support any such thing, but the economic logic seems inescapable.