You're thinking about it from purely a programmer's perspective. Imagine the world switches to "bobish" tomorrow, which is 20% more efficient than english.

Suddenly, bandwidth decreases by 20%, downloads are 20% faster, server costs decrease 20%, data centre energy usage decreases by 20%, greenhouse gases from data centres decrease by 20%, and so global warming slows down by _% and on and on. Sure it won't be 20%, it might not be nearly that in many cases, but think about the magnitude of the rube goldberg of unknown efficiency increases you'll set off.