[dsowers]

Just not possible in the sense that a hosted solution has the expectation that everything is managed for you. An open-source solution requires you to do the work of setting it up, configuring, handling traffic spikes, backups, etc...

[arca_vorago]

I see your intention now, but you are using the words in the wrong context with the wrong definition. There are plenty of hosted open source products that require little to no setup.