I've wondered the same thing for when i eventually do this in a newer house/studio with higher ceilings. Sure, you can staple the fabric, but you'll see the staples! I'd assume you'd want at least 2 others helping. 2 guys to stretch fabric evenly across as you go, and one guy stapling.
People talk about absorptive ceiling and reflective floor all the time, but I've yet to actually see a fabric covered and absorptive ceiling in person, nor in pictures.
This guy has taken a lot of time in making sure his studio looks and sounds good, and surely a bunch of staples will look nothing more than amateur and just plain ugly.