OTOH, there's a lot of renewed advocacy for breaking off the naturally monopolistic "platforms" developed by existing tech firms, and making sure that they're run in the public interest via strong regulation. That's basically a residual argument for centralized collective "planning" in an economic context, even as part of a market-based economy. Based on the observation that, either way, a monopolized "platform" is not really subject to market discipline, so the government needs to step-in as a substitute.