Facebook is an entertainment company, it probably delivers negative economic efficiency growth - Today it's common for employees to check their Facebook and instagram during work hours (which reduces their productivity).
People also spend more time playing games (there are so many options available; social games, virtual reality, iPhone apps...). Then there is YouTube which helps create jobs for more entertainers and at the same time it lowers productivity efficiency in the workplace - It's a tool for procrastination.
Even enterprise companies aren't delivering efficiency improvements. Docker has gotten a lot of hype but I am yet to see it deliver efficiency improvements in industry - Particularly on the deployment side. I dont see how hiding complexity inside containers actually reduces the overall complexity of the system. Maybe the real solution is to use fewer tools which have simpler boot logic?
You could argue that Docker is great for PaaS, but then you have to ask the question of whether PaaS itself delivers efficiency improvements? Maybe platforms like Amazon Lambda will deliver, but so far what I've seen is that big companies in general don't use PaaS.
I think companies which deliver real efficiency at the moment are being ignored by the market in favour of companies which have a large marketing budget.