What would the average tech level be for the common folk in a space empire?

In Star Gate, the Ori are notorious for keeping the tech level of their planetary subjects at or under medieval tech levels. It has been said (still looking for the exact source) that if everyone lived like an American it would take the combined resources of 4 Earth's(link) to support our population.

I have a space faring empire with many planets.

Assuming medical technology is exempt (so there are still fully operational ER's) and sanitation is better maintained (indoor plumbing would have to exist regardless of tech level...maintained by the govt. of course), at what tech level (or technology oriented) lifestyle would a planet of 8 billion people have to average?

What other benefits would a space-faring society have if they spanned hundreds of solar systems?

EDIT:

The civilization in question has Battlestar Galactica level technology.

posted about 9 years ago

JDSweetBeat‭

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