Implants running Windows?

This article from Technology Review talks about how computers will be implanted into people. Kind of reminds me about that movie Johnny Mneumonic when Keanu Reeves downloaded to his chip implanted in the brain, while authorities were trying to get a hold of that confidential information. Even though the computer implants can be used to help the blind see and deaf hear, Bill Gates says implanting is not for him. What's that? Gates doesn't want to use computers in his body? Imaging how much more power he could control if the implants were running some stripped down version of Windows, like RFID tags. Oh no, people would start crashing. I don't think we're ready to have software put into those implants yet, we can't even get our own software on our machines to be that reliable!