Four years ago, I wrote a post about how there is $240B on the balance sheet of some of the biggest technology companies (10 of them) in the world, which is a great sign for startups who are looking to get acquired. Almost all of the companies in 2011 have added significant cash to their balance sheet over the past four years. I pulled up the cash on hand for an expanded list (21 companies) and now there is $600B available to make acquisitions of startups.
I included cash and short-term investments only for this and previous post. So in reality there is much more than $600B available via long-term accounts / offshore accounts.