>>Furthermore, why can't people with desk jobs work from home?<<
This might work for expats and rich folks with big flats, but the average local is living in <400' sq with spouse, kids (also home from school with the typhoon signal up) and probably in-laws. Good luck with getting any work done!
Come to think of it, this could also explain just why so many office workers like to stay late at work whether or not they're actually doing anything constructive - it's quieter there!