Bruce Sterling is a bit of a hero of mine, and here is a quote from his closing speech at SXSW this year that I've been meaning to post for a while ...
"[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.
People like the Stacks, [because] the internet is scary now -- so what's the problem there? None of them offer any prosperity or security to their human participants, except for their shareholders. The internet has users. Stack people are livestock -- ignorant of what's going on, and moving from on stack to another. The Stacks really, really want to know you're a dog.
They're annihilating other media... The Lords of the Stacks. And they're not bad guys -- I'd be happy to buy them a beer. But really, a free people would not be so dependent on a Napoleonic mobile people. What if Mark Zuckerberg trips over a skateboard?
This structure won't last very long... But you're really core people for them and their interests. You are them. I'm them. And your kids are going to ask embarrassing questions about them. And there are voices here and there complaining about them, [like] Jonathan Franzen. He says Twitter is destroying literature. And he's right. So don't make fun of him. He's telling the truth."