What happens if you Ctrl+C, Ctrl+V on the Doctor’s data files? Do you duplicate a sentient being?
In “Virtuoso”, Tom & Harry try to reproduce the Doctor but they’re basically trying to make him from scratch, so I don’t think their failure is relevant.
At the end of “Author, Author” we see many repurposed EMH Mk1s working as miners:

…and they seem to be self-aware, so I guess we have to assume that it’s technically feasible.
But then what happens if you Ctrl+Z?


Violence is what happens.
And given the immense file size, the ship’s computer will probably draw all power from life support.
Love how barclay turns right back to the Doctor in utter shock. Makes it look like the Doc was gentler than with paris xD
multiple epsiodes where he was the only one so it made snse. antimatter/fusion in thier subsystems produces alot more energy then you can use anyway.