I really wasn't trying to get into Marxism, but as an armchair university professor, I would guess that a computer network is necessarily built of capital (i.e. nodes of routers and computers), and the alternative to prevent suppression of the working class would be collective ownership of the routers; with some arbitrary "equitable" and/or "fair" routing scheme, which I guess would look like Net Neutrality (and it is, so far as I can tell, a good routing principle).
Aside, Adam Smith also casually used Labor Theory of Value (lacking a better alternative to explain the relationship of costs to prices), the settlement on Marginal Theory of Value didn't come about until Carl Menger.
There's examples of rent-seeking and legal barriers to entry too numerous to list, but municipal networks would be an example of the latter. If I wanted to install a high-capacity line to houses, I'd have to compete with the taxpayer-funded installed lines - an artificial increase in costs (cost being the value of the next-best alternative).