>>270584890
A government is literally the only entity that you would let fuck around in your brain for any reason and for a very limited and theoretical reason.
>Your country is in a legitimate war with a just cause and you have decided to volunteer for military service. The military wants to give you cybernetic enhancements to make you more effective and more likely to survive the war or to enhance and make your contribution and sacrifice more effective to the war effort. You do this to protect your family, friends and country.
A corporation has a duty to it's shareholders. 
It's selling and implanting you with cybernetics to the ultimate benefit of shareholders. Anything else is provided secondary to that or in order to uphold that.
Imagine having implants and proprietary technology from one company implanted all over your brain matter then that company goes bankrupt or gets bought out by another company like facebook and they shut down services and updates to that proprietary technology. Your brain is literally obsolete hardware. Replacing parts is now like trying to replace parts to the original rift.