Fully decentralized serverless systems are undoubtedly superior in many ways to federated server based systems. But, I don't think serverless systems are necessarily immune to appropriation and centralization by big corporations.

For example, email did start out as a serverless system, but was later absorbed into big monopolies and mostly centralized. As a result, email has become one of the most difficult things to self-host. Some reasons given for this, such as spam, are legitimate, but IMO were blown greatly out of proportion. Many anti-spam measures are sledgehammers instead of being scalpels.

BitTorrent is almost serverless. Yet, these days, with data-limited and firewalled mobile connections, it's not too easy to run. As a result, you have recentralization of torrents in seedboxes. Or, you have people completely abandoning torrents in favor of sites like YouTube.

Maybe, some level of user awareness is indispensable to avoid falling back into the trap of centralization.
@arunisaac True, initiatives like p2p naming system and community wireless mesh networks arises naturally as a counter for these. Let's see how this dialectics play well together.