I couldn't remember, thanks for raising that point. So, I searched and found this CNET article[0] which states Facebook ended up only paying $715 million: "Although Instagram's original price tag was $1 billion, Facebook ends up paying $521 million in cash and $194 million in stock for the popular photo-sharing network."

I guess not mostly stock, but still half a billion cash, although not $1 billion. I guess my original point still stands, though it isn't quite as impactful an example. :)

[0] https://www.cnet.com/tech/services-and-software/facebooks-fi...