Uh, this is bad. Gain social, economic, political power at the expense of having a hackable brain. This is how science-fiction dystopias happen.
It’s not for everyone. In the money tests the chips were implanted and scanned brainwaves until enough were gathered to decipher and interpret their meaning. (Not a scientist and my laypersons understanding). The chip could then be programmed to react to the brainwaves. If you were a quadriplegic and offered the ability to use a computer or control other devices this may give you some autonomy. Fast forward, a second chip is implanted beyond the spinal cord break and you gain movement in your arms and legs. The line would be long for those begging for the chip.
Hhmm... That’s not how this technology works. Nor will it literally “read” a persons thoughts. The impulses the device will interact with are similar to the ones you are currently using to type these words into your web browser. Nothing more.
Well... nothing more... yet. Some djinn, once let loose... are notorious for running amok.