>Do these talented people really need to be in an office in Silicon Valley, sitting opposite you, tapping away on their keybosrds with their headphones on to as productive or better than me or you?
It really depends on the person. I know for me? I'm vastly more productive when I'm trying to ignore the other people in the room and work.
For me? It's at least in part about immediate and constant social pressure. That, and showing off. I would be super embarrassed, say, if a co-worker noticed me reading HN during work hours. How come I haven't been able to implement something remote for this? Could you rig up webcams or telepresence bots to do the same thing? I don't know.
Working remote? oh well, I just won't put that hour on my timesheet. I mean, I'm honest about my hours, but in the last few remote situations I was in, I just didn't put in the hours.
Now, not everyone is like this. I know many people that are vastly more productive when alone, in fact the most productive individual contributor technical people I know are vastly more productive alone.
But for me, my own faults and weaknesses line up such that I need an office. I need that social pressure keeping me on track. The difference in productivity is vast; enough, at least, to justify significant rent and some commute time.