Seriously, though. I never understood why Groupon, Snap, etc. turn down these multi-billion dollar acquisition offers. It's not like these products/services have a huge impact on the world (if they were to disappear, who would really care?), take the money and run.

Instagram selling to FB is a potential mistake in hindsight. Even without FB's direct backing, IG was poised to grow like crazy. Probably could've IPOed or sold to FB or someone else for 10x or 15x 2 years later.

From what I've heard (don't quote me on this), I think Instagram was having serious financial difficulties at the time of the acquisition. The costs to run the service (media transfer and storage are a massive infrastructure cost) were astronomical. The Facebook buyout was almost the only way they'd stay alive without giving up a massive piece of the company in a funding round.

Well, if Google had sold to Yahoo, or FB again to Yahoo....

Aren't they better off not selling for $3B? Insider stocks will be able to sell their shares soon. Snapchat is unlikely to be at a $10B or lower market cap for the next year. So people have plenty of time to take some money out.