All of those musician's workstations have the actual
computer hidden somewhere out of sight. There's a monitor or two, a computer keyboard lying around(all wireless, it looks like?), but all those desks are dominated by musical keyboards, mixer boards, and speakers. Sometimes there's a laptop sitting on it. All the cables are hidden, out of the way.
Take away the monitors and the computer keyboard, substitute a couple of multi-track reel-to-reel tape decks, and it looks exactly like what I'd see when I'd visit my dad at his audio engineer job in the 1970s.
The computer itself is just an appliance, stick it under the desk next to the mini-fridge. Maximize the available surface used for getting the work done; as long as the computer's got enough airflow to not overheat when you push it hard, who cares where it is?
Well, gamers care I guess, they all have those crazy light-up cases with clear sides to show off how much they spent on their custom-built rig. The computer's become an object of desire there.