He starts off going wrong with a rather gross misunderstanding of what being "of the left" in American terms means these days:
The digital revolution, we are told everywhere today, produces democracy. It gives "power to the people" and dethrones authoritarians; it levels the playing field for distribution of information critical to political engagement; it destabilizes hierarchies, decentralizes what had been centralized, democratizes what was the domain of elites.
Most on the Left would endorse these ends. The widespread availability of tools whose uses are harmonious with leftist goals would, one might think, accompany broad advancement of those goals in some form. Yet the Left today is scattered, nearly toothless in most advanced democracies. If digital communication technology promotes leftist values, why has its spread coincided with such a stark decline in the Left's political fortunes?
What the left really wants is a centralized elite authority that pursues particular ends it claims to desire, often allegedly on behalf of "the people"; people who really want dethroned authority, free flow of information, and decentralization are libertarians.
Why would a left that wants to see a world shaped to its own particular desires–about income distribution, market and personal choice and behavior, and forced change in people's transportation, energy, and consumption choices, embrace a world of greater decentralization and choice?
Rather than engaging the real reasons why the mentality implied by the "digital revolution" hasn't led to a resurgent leftist world of policy, Golumbia decides to blame those who actually recognize that there is a pretty natural connection between digital practice and ideology and libertarianism. What's more, he gets mad at leftists in the digital realm who even hold any truck with libertarians:
When computers are involved, otherwise brilliant leftists who carefully examine the political commitments of most everyone they side with suddenly throw their lot in with libertarians — even when those libertarians explicitly disavow Left principles in their work.
This, much more than overt digital libertarianism, should concern the Left, and anyone who does not subscribe to libertarian politics. It is the acceptance by leftists of the largely rhetorical populist politics and explicitly pro-business thought of figures like Clay Shirky (who repeatedly argues that representative democratic and public bodies have no business administering public resources but must defer to "disruptive" forces like Napster) and Yochai Benkler (whose Wealth of Networks is roundly celebrated as heralding an anticapitalist "sharing economy," yet remains firmly rooted in capitalist economics) that should concern us….
The first line above is wonderful: markets and most especially the Internet (where no one knows you are a dog, if you don't want them to) are wonderful realms for mutually pleasurable and valuable interactions where, blessedly, ancient obsessions about agreement on religions, or race or culture, are irrelevant. They are even places where political belief can be glossed over, to get to where what I'm implying will stop making sense to many people even though the beautiful advantages for peace and mutual advantage of just treating certain things as irrelevent to civilized interaction are the same as in the old Enlightenment project of getting over race, religion, and gender, and nationality in deciding who we'll tolerate.
But to the leftist, one must "carefully examine the political commitments of most everyone they side with…." and act accordingly.
The rest of the essay goes on (among many other things, including relying on Philip Mirowski's tendentious vision of libertarianism's dark soul) to make typical category errors about what he's speaking about (no, libertarian belief in liberty and spontaneous order is the very opposite of his claim that "cyberlibertarianism holds that society's problems can be solved by simply construing them as engineering and software problems"); usual assumptions that anything anyone might make a profit at is for that very reason suspect and unsavory; and a core vagueness about what exactly leftist goals are, because sometimes just saying: "managing everyone's lives and a vast roundrobin distribution of wealth in all directions via a massive national machinery of power that we then hope will do the nice things we approve of with it" can be a hard sell.
The digital revolution has given us 3D printers–which help people make guns regardless of regulation. It has given us the means to gamble from our own homes. It has given us an experimental currency outside government control and management. It has allowed communities of affinity to discover facts and arguments they would not have the means to encounter in a more centralized world of news and communication, and propelled strange candidates like Ron Paul to prominence.
All that has not been accident. It is inherent in a very libertarian-at-heart "digital revolution."
The Left alas, will have to invent its own institutions and methods to get what it wants–like, say, an attempt to register and restrict access to and prohibit tools of personal defense, picayune shaping of people's choices of fun, a huge central bank by which to manage the currency for its elite needs and enrich the well connected, and politicians who say only those things that near majorities want to hear. Wherever will the Left find its dream coming true? I feel for them.