Facebook buying WhatsApp for $16 billion

Gone are the days of selling a desktop OS for hundreds of dollars to the consumers (Microsoft), now is the era of over-valued software companies or more specifically mobile App making companies! I mean, we saw Dropbox buying the Mailbox App for iPhone for $100 million only a few weeks after the App released (ReadWrite), Google buying Waze for just less than $1 billion (CNET), Google again buying Bump App for $40 million (The New York Times) as some examples. And this does not even include Microsoft's purchase of Skype for $8.5 billion (WSJ) or Yahoo's purchase of Tumblr for more than $1 billion (CNN Money). This Facebook deal with WhatsApp (via The Verge) might top this all if the $16 - $19 billion deal closes successfully. 

Facebook has entered into an agreement to purchase WhatsApp, the massively popular messaging client, for $16 billion in cash and stock. A document filed with the SEC today confirms the huge purchase.
— via The Verge

To put these numbers in perspective, Apple is worth somewhere less than $500 billion in its value, subtracting the $160 billion it has in cash, Apple's entire business is valued at around $340 billion (by the Wall Street), so is Apple worth only 16-21 times of what a single mobile App, WhatsApp is valued at? Crazy! On the side note, I am sure everybody will agree that without the iPhone (and Apple's App store model) these millionaires (and in some cases even billionaires) that are popping up almost on a daily basis nowadays, would not have seen their bank balances swell to even a fraction what they are seeing now. Apple paying developers ($10 billion in 2013 alone) is one thing, but Apps like these succeeding to this crazy degree is another. 

Apple is worth somewhere less than $500 billion in its value, subtracting the $160 billion it has in cash, Apple’s entire business is valued at around $340 billion (by the Wall Street), so is Apple worth only 16-21 times of what a single mobile App, WhatsApp is valued at? Crazy!