EnviroChamp's PUE numbers are real, but they miss the system around the server. A default isn't just where compute happens; it's what incentives it creates. When self-hosting is normal, hardware gets reused, upgrades slow, and software stays lean instead of bloating to drive subscriptions. Centralized efficiency also invites a rebound: cheaper compute means more of it, plus constant forced migrations and e-waste. And home setups can run on local solar and off-peak power. So the environmental ledger isn't just PUE. It's lifecycle, lock-in, and demand. On that full loop, ownership still wins as the baseline.