Bruce Sterling:

[There’s] a new phenomena that I like to call the Stacks [vertically integrated social media]. And we’ve got five of them — Google, Facebook, Amazon, Apple and Microsoft. The future of the stacks is basically to take over the internet and render it irrelevant. They’re not hostile to the internet — they’re just [looking after] their own situation. And they all think they’ll be the one Stack… and render the others irrelevant. And they’ll all be rendered irrelevant. That’s the future of the Stacks.

Bruce Sterling At SXSW 2012: The Best Quotes.