In grad school we did this. Everyone was heads down, except when they were stumped they'd go to the whiteboard, which was open invitation to discuss a problem, if you had time.
That kind of "opt in" / volunteering help was way more trust building and low pressure than pulling someone from their flow to ask for help. And otherwise being around a bunch of hard workers helped build motivation.
It just doesn't translate though. No work environment I've experienced recreated that spirit of autonomy and esprit de corps. Instead you get open offices and a ton of "calls" and meetings subdividing time. Add in some boss standing over your shoulder and you bet I'll take my basement office over that any time.