>> You expect to not be responsible for what happens to the software you put into production?
I'm responsible for the software I put into production from 9 AM to 5 PM for about 200 days a year. At 3 AM, I am responsible for taking care of myself by getting a good night's sleep.
If you need 24 hour coverage, taking into account vacations and weekends, you need 5 or 6 people.