The core problem with IPFS and friends is that the vast majority of Web access these days occurs on battery-powered devices that need to sleep their connections

The core problem with IPFS and friends is that the vast majority of Web access these days occurs on battery-powered devices that need to sleep their connections often and for long periods or battery life will plummet. End users aren't going to accept even 10% worse battery life (and it'd likely be worse than that) just so they can participate in "the swarm" and have higher latency and slower transfer on all their requests.