I would never, never, never trust a company to have direct access to my brain. I cannot even trust Facebook to have notification power on my phone, how could I ever give a corporation brain access?
What if your brain chip provider gets sold off to another, shittier company? One day you wake up and you have some new opinions installed into your brain - don't worry, you can remove them, just pay $10,000 for the premium package.
It brings this to mind: 
Good post by the way, I just don't share your optimism!
RE: New AI Possibilities: Google Think?