I don't think that really has anything to with it at all. It comes down to how many people in the world are connected to the internet. I've seen a lot of numbe

I don't think that really has anything to with it at all. It comes down to how many people in the world are connected to the internet. I've seen a lot of numbers around 2 billion people. Facebook has 900 million users. Even if they got every person on earth, thats only 7x growth (and that would be impossible). Their valuation is not based on 2x or 6x growth, their valuation requires an order of magnitude of revenue growth. There are not an order of magnitude more users left on this planet. And that completely ignores the fact that most of the remaining people aren't as valuable to advertisers.