I heartily disagree that anyone should "detect a consensus" from leftists preaching expropriation. That's just an ordinary activity for them. Nick Srnicek may be shouting a bit louder than most from his pulpit in The Guardian, but that has as little to do with truth as his article has to do with reason.
Google, Facebook, and Amazon are just fashionable targets for his emotional appeals for a more powerful state. He doesn't write about Monsanto in this article, even though they have an ever tightening control over the food we eat, because they aren't as well understood by the masses.
Bread and circuses. This is the circus part.