Comment by ilovenerds

I'm not familiar with Urbit, but a quick glance at their website says that it's owned by the "Tlon Corporation," which I have to assume is a for profit company. Ethereum on the other hand is guided, but not owned or controlled by a non-profit foundation. Ethereum is a public utility and they have a mechanism for community involvement and contribution via Ethereum Improvement Proposals (EIP). Hope that helps!