They also have a very intense workplace culture, I had a manager who was part of Evernote while their site was being laid off by Bending Spoons, and he heard some wild stories, they pay above average for a European tech company (but with geo-fenced brackets), crunch a ton and then crash out at a big new year's party were they fly all their teams to some resort, among other things.

It's the circle of life - all businesses reach a point where they don't have significant growth potential or became a "keep the lights on operation" and their investors and founders wish to exit and cash out in order to invest in greener pastures.

That's where businesses like Bending Spoons, Red Ventures, and IAC come in for digital media.